吴裕雄--天生自然--SPRING BOOT--电子商务平台的设计与实现（THYMELEAF+MYBATIS）-- 后台代码实现部分

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.business</groupId>
    <artifactId>SpringBootMyBusiness</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <!-- 声明项目配置依赖编码格式为 utf-8 -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <fastjson.version>1.2.24</fastjson.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <!-- 添加MySQL依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
            <version>8.0.13</version><!--$NO-MVN-MAN-VER$ -->
        </dependency>

        <!-- MyBatis-Spring，Spring Boot应用整合MyBatis框架的核心依赖配置 -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>

        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <!-- 由于commons-fileupload组件不属于Spring Boot，所以需要加上版本 -->
            <version>1.3.3</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

server.servlet.context-path=/eBusiness
spring.datasource.url=jdbc:mysql://localhost:3306/springbootjpa?serverTimezone=UTC&autoReconnect=true
spring.datasource.username=root
spring.datasource.password=admin
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.database=MYSQL
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jackson.serialization.indent-output=true
mybatis.type-aliases-package=com.ch.ebusiness.entity
mybatis.mapperLocations=classpath:mappers/*.xml
logging.level.com.ch.ebusiness.repository=debug
spring.thymeleaf.cache=false
spring.servlet.multipart.max-file-size=50MB
spring.servlet.multipart.max-request-size=500MB

package com.ch.ebusiness.entity;

public class AUser {
    private String aname;
    private String apwd;

    public String getAname() {
        return aname;
    }

    public void setAname(String aname) {
        this.aname = aname;
    }

    public String getApwd() {
        return apwd;
    }

    public void setApwd(String apwd) {
        this.apwd = apwd;
    }
}

package com.ch.ebusiness.entity;

import javax.validation.constraints.Email;
import javax.validation.constraints.NotBlank;

import org.hibernate.validator.constraints.Length;

public class BUser {
    private Integer id;
    @NotBlank(message = "邮箱必须输入！")
    @Email(message = "邮箱格式不正确！")
    private String bemail;
    @NotBlank(message = "密码必须输入！")
    @Length(min = 6, max = 20, message = "密码长度在6到20之间！")
    private String bpwd;
    private String rebpwd;
    private String code;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getBemail() {
        return bemail;
    }

    public void setBemail(String bemail) {
        this.bemail = bemail;
    }

    public String getBpwd() {
        return bpwd;
    }

    public void setBpwd(String bpwd) {
        this.bpwd = bpwd;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getRebpwd() {
        return rebpwd;
    }

    public void setRebpwd(String rebpwd) {
        this.rebpwd = rebpwd;
    }
}

package com.ch.ebusiness.entity;

import org.springframework.web.multipart.MultipartFile;

public class Goods {
    private int id;
    private String gname;
    private double goprice;
    private double grprice;
    private int gstore;
    private String gpicture;
    private MultipartFile fileName;
    private int goodstype_id;
    private String typename;
    private int buyNumber;// 加入购物车使用
    private int isAdvertisement;
    private int isRecommend;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getGname() {
        return gname;
    }

    public void setGname(String gname) {
        this.gname = gname;
    }

    public double getGoprice() {
        return goprice;
    }

    public void setGoprice(double goprice) {
        this.goprice = goprice;
    }

    public double getGrprice() {
        return grprice;
    }

    public void setGrprice(double grprice) {
        this.grprice = grprice;
    }

    public int getGstore() {
        return gstore;
    }

    public void setGstore(int gstore) {
        this.gstore = gstore;
    }

    public String getGpicture() {
        return gpicture;
    }

    public void setGpicture(String gpicture) {
        this.gpicture = gpicture;
    }

    public int getGoodstype_id() {
        return goodstype_id;
    }

    public void setGoodstype_id(int goodstype_id) {
        this.goodstype_id = goodstype_id;
    }

    public String getTypename() {
        return typename;
    }

    public void setTypename(String typename) {
        this.typename = typename;
    }

    public int getBuyNumber() {
        return buyNumber;
    }

    public void setBuyNumber(int buyNumber) {
        this.buyNumber = buyNumber;
    }

    public int getIsAdvertisement() {
        return isAdvertisement;
    }

    public void setIsAdvertisement(int isAdvertisement) {
        this.isAdvertisement = isAdvertisement;
    }

    public int getIsRecommend() {
        return isRecommend;
    }

    public void setIsRecommend(int isRecommend) {
        this.isRecommend = isRecommend;
    }

    public MultipartFile getFileName() {
        return fileName;
    }

    public void setFileName(MultipartFile fileName) {
        this.fileName = fileName;
    }
}

package com.ch.ebusiness.entity;

public class GoodsType {
    private int id;
    private String typename;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getTypename() {
        return typename;
    }

    public void setTypename(String typename) {
        this.typename = typename;
    }
}

package com.ch.ebusiness.entity;

public class Order {
    private Integer id;
    private Integer busertable_id;
    private Double amount;
    private Integer status;
    private String orderdate;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getBusertable_id() {
        return busertable_id;
    }

    public void setBusertable_id(Integer busertable_id) {
        this.busertable_id = busertable_id;
    }

    public Double getAmount() {
        return amount;
    }

    public void setAmount(Double amount) {
        this.amount = amount;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public String getOrderdate() {
        return orderdate;
    }

    public void setOrderdate(String orderdate) {
        this.orderdate = orderdate;
    }
}

package com.ch.ebusiness.repository.admin;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.ch.ebusiness.entity.AUser;

@Mapper
public interface AdminRepository {
    List<AUser> login(AUser aUser);
}

package com.ch.ebusiness.repository.admin;

import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.GoodsType;

@Mapper
public interface GoodsRepository {
    int addGoods(Goods goods);

    int updateGoods(Goods goods);

    Goods selectAGoods(Integer id);

    int selectAllGoods();

    List<GoodsType> selectAllGoodsType();

    List<Goods> selectAllGoodsByPage(@Param("startIndex") int startIndex, @Param("perPageSize") int perPageSize);

    int deleteAGoods(Integer id);

    List<Map<String, Object>> selectFocusGoods(Integer id);

    List<Map<String, Object>> selectCartGoods(Integer id);

    List<Map<String, Object>> selectOrderGoods(Integer id);
}

package com.ch.ebusiness.repository.admin;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.GoodsType;

@Mapper
public interface TypeRepository {
    int selectAll();

    List<GoodsType> selectAllTypeByPage(@Param("startIndex") int startIndex, @Param("perPageSize") int perPageSize);

    int deleteType(int id);

    List<Goods> selectGoods(int goodstype_id);

    int addType(GoodsType goodsType);
}

package com.ch.ebusiness.repository.admin;

import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import com.ch.ebusiness.entity.BUser;

@Mapper
public interface UserAndOrderAndOutRepository {
    List<BUser> selectUserByPage(@Param("startIndex") int startIndex, @Param("perPageSize") int perPageSize);

    int selectAllUser();

    List<Map<String, Object>> selectCartUser(int id);

    List<Map<String, Object>> selectOrderUser(int id);

    int deleteUser(int id);

    int selectAllOrder();

    List<Map<String, Object>> selectOrderByPage(@Param("startIndex") int startIndex,
            @Param("perPageSize") int perPageSize);
}

package com.ch.ebusiness.repository.before;

import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import com.ch.ebusiness.entity.Order;

@Mapper
public interface CartRepository {
    public List<Map<String, Object>> isFocus(@Param("uid") Integer uid, @Param("gid") Integer gid);

    public int focus(@Param("uid") Integer uid, @Param("gid") Integer gid);

    public int putCart(@Param("uid") Integer uid, @Param("gid") Integer gid, @Param("bnum") Integer bnum);

    public List<Map<String, Object>> isPutCart(@Param("uid") Integer uid, @Param("gid") Integer gid);

    public int updateCart(@Param("uid") Integer uid, @Param("gid") Integer gid, @Param("bnum") Integer bnum);

    public List<Map<String, Object>> selectCart(Integer uid);

    public int deleteAgoods(@Param("uid") Integer uid, @Param("gid") Integer gid);

    public int clear(Integer uid);

    public int addOrder(Order order);

    public int addOrderDetail(@Param("ordersn") Integer ordersn, @Param("uid") Integer uid);

    public List<Map<String, Object>> selectGoodsShop(Integer uid);

    public int updateStore(Map<String, Object> map);

    public int pay(Integer ordersn);

    public List<Map<String, Object>> myFocus(Integer uid);

    public List<Map<String, Object>> myOrder(Integer uid);

    public List<Map<String, Object>> orderDetail(Integer id);

    public int updateUpwd(@Param("uid") Integer uid, @Param("bpwd") String bpwd);
}

package com.ch.ebusiness.repository.before;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.GoodsType;

@Mapper
public interface IndexRepository {
    public List<Goods> selectAdvertisementGoods();

    public List<GoodsType> selectGoodsType();

    public List<Goods> selectRecommendGoods(Integer tid);

    public List<Goods> selectLastedGoods(Integer tid);

    public Goods selectAGoods(Integer id);

    public List<Goods> search(String mykey);
}

package com.ch.ebusiness.repository.before;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.ch.ebusiness.entity.BUser;

@Mapper
public interface UserRepository {
    public List<BUser> isUse(BUser bUser);

    public int register(BUser bUser);

    public List<BUser> login(BUser bUser);
}

package com.ch.ebusiness.service.admin;

import javax.servlet.http.HttpSession;

import org.springframework.ui.Model;

import com.ch.ebusiness.entity.AUser;

public interface AdminService {
    public String login(AUser aUser, HttpSession session, Model model);
}

package com.ch.ebusiness.service.admin;

import java.util.List;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;

import com.ch.ebusiness.entity.AUser;
import com.ch.ebusiness.repository.admin.AdminRepository;

@Service
public class AdminServiceImpl implements AdminService {
    @Autowired
    private AdminRepository adminRepository;

    @Override
    public String login(AUser aUser, HttpSession session, Model model) {
        List<AUser> list = adminRepository.login(aUser);
        if (list.size() > 0) {// 登录成功
            session.setAttribute("auser", aUser);
            return "forward:/goods/selectAllGoodsByPage?currentPage=1&act=select";
        } else {// 登录失败
            model.addAttribute("errorMessage", "用户名或密码错误！");
            return "admin/login";
        }
    }
}

package com.ch.ebusiness.service.admin;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import org.springframework.ui.Model;

import com.ch.ebusiness.entity.Goods;

public interface GoodsService {
    public String selectAllGoodsByPage(Model model, int currentPage, String act);

    public String addGoods(Goods goods, HttpServletRequest request, String act)
            throws IllegalStateException, IOException;

    public String toAddGoods(Goods goods, Model model);

    public String detail(Model model, Integer id, String act);

    public String delete(Integer id);
}

package com.ch.ebusiness.util;

import java.security.MessageDigest;

public class MD5Util {
    /***
     * MD5加码生成32位md5码
     */
    public static String string2MD5(String inStr) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }
        char[] charArray = inStr.toCharArray();
        byte[] byteArray = new byte[charArray.length];
        for (int i = 0; i < charArray.length; i++)
            byteArray[i] = (byte) charArray[i];
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16)
                hexValue.append("0");
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    /***
     * 自己规则加密
     * 
     * @param inStr
     * @return
     */
    public static String MD5(String inStr) {
        String xy = "abc";
        String finalStr = "";
        if (inStr != null) {
            String fStr = inStr.substring(0, 1);
            String lStr = inStr.substring(1, inStr.length());
            finalStr = string2MD5(fStr + xy + lStr);
        } else {
            finalStr = string2MD5(xy);
        }
        return finalStr;
    }
}

package com.ch.ebusiness.util;

import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpSession;
import com.ch.ebusiness.entity.BUser;

public class MyUtil {
    /**
     * 将实际的文件名重命名
     */
    public static String getNewFileName(String oldFileName) {
        int lastIndex = oldFileName.lastIndexOf(".");
        String fileType = oldFileName.substring(lastIndex);
        Date now = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("YYYYMMDDHHmmssSSS");
        String time = sdf.format(now);
        String newFileName = time + fileType;
        return newFileName;
    }

    /**
     * 获得用户信息
     */
    public static BUser getUser(HttpSession session) {
        BUser bUser = (BUser) session.getAttribute("bUser");
        return bUser;
    }
}

package com.ch.ebusiness.service.admin;

import java.io.File;
import java.io.IOException;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;
import org.springframework.web.multipart.MultipartFile;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.repository.admin.GoodsRepository;
import com.ch.ebusiness.util.MyUtil;

@Service
public class GoodsServiceImpl implements GoodsService {
    @Autowired
    private GoodsRepository goodsRepository;

    @Override
    public String selectAllGoodsByPage(Model model, int currentPage, String act) {
        // 共多少个商品
        int totalCount = goodsRepository.selectAllGoods();
        // 计算共多少页
        int pageSize = 5;
        int totalPage = (int) Math.ceil(totalCount * 1.0 / pageSize);
        List<Goods> typeByPage = goodsRepository.selectAllGoodsByPage((currentPage - 1) * pageSize, pageSize);
        model.addAttribute("allGoods", typeByPage);
        model.addAttribute("totalPage", totalPage);
        model.addAttribute("currentPage", currentPage);
        model.addAttribute("act", act);
        return "admin/selectGoods";
    }

    @Override
    public String addGoods(Goods goods, HttpServletRequest request, String act)
            throws IllegalStateException, IOException {
        MultipartFile myfile = goods.getFileName();
        // 如果选择了上传文件，将文件上传到指定的目录images
        if (!myfile.isEmpty()) {
            // 上传文件路径（生产环境）
            // String path = request.getServletContext().getRealPath("/images/");
            // 获得上传文件原名
            // 上传文件路径（开发环境）
            String path = "C:\\workspace-spring-tool-suite-4-4.1.1.RELEASE\\eBusiness\\src\\main\\resources\\static\\images";
            // 获得上传文件原名
            String fileName = myfile.getOriginalFilename();
            // 对文件重命名
            String fileNewName = MyUtil.getNewFileName(fileName);
            File filePath = new File(path + File.separator + fileNewName);
            // 如果文件目录不存在，创建目录
            if (!filePath.getParentFile().exists()) {
                filePath.getParentFile().mkdirs();
            }
            // 将上传文件保存到一个目标文件中
            myfile.transferTo(filePath);
            // 将重命名后的图片名存到goods对象中，添加时使用
            goods.setGpicture(fileNewName);
        }
        if ("add".equals(act)) {
            int n = goodsRepository.addGoods(goods);
            if (n > 0)// 成功
                return "redirect:/goods/selectAllGoodsByPage?currentPage=1&act=select";
            // 失败
            return "admin/addGoods";
        } else {// 修改
            int n = goodsRepository.updateGoods(goods);
            if (n > 0)// 成功
                return "redirect:/goods/selectAllGoodsByPage?currentPage=1&act=updateSelect";
            // 失败
            return "admin/UpdateAGoods";
        }
    }

    @Override
    public String toAddGoods(Goods goods, Model model) {
        model.addAttribute("goodsType", goodsRepository.selectAllGoodsType());
        return "admin/addGoods";
    }

    @Override
    public String detail(Model model, Integer id, String act) {
        model.addAttribute("goods", goodsRepository.selectAGoods(id));
        if ("detail".equals(act))
            return "admin/detail";
        else {
            model.addAttribute("goodsType", goodsRepository.selectAllGoodsType());
            return "admin/updateAGoods";
        }
    }

    @Override
    public String delete(Integer id) {
        if (goodsRepository.selectCartGoods(id).size() > 0 || goodsRepository.selectFocusGoods(id).size() > 0
                || goodsRepository.selectOrderGoods(id).size() > 0)
            return "no";
        else {
            goodsRepository.deleteAGoods(id);
            return "/goods/selectAllGoodsByPage?currentPage=1&act=deleteSelect";
        }
    }
}

package com.ch.ebusiness.util;

import java.security.MessageDigest;

public class MD5Util {
    /***
     * MD5加码生成32位md5码
     */
    public static String string2MD5(String inStr) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }
        char[] charArray = inStr.toCharArray();
        byte[] byteArray = new byte[charArray.length];
        for (int i = 0; i < charArray.length; i++)
            byteArray[i] = (byte) charArray[i];
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16)
                hexValue.append("0");
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    /***
     * 自己规则加密
     * 
     * @param inStr
     * @return
     */
    public static String MD5(String inStr) {
        String xy = "abc";
        String finalStr = "";
        if (inStr != null) {
            String fStr = inStr.substring(0, 1);
            String lStr = inStr.substring(1, inStr.length());
            finalStr = string2MD5(fStr + xy + lStr);
        } else {
            finalStr = string2MD5(xy);
        }
        return finalStr;
    }
}

package com.ch.ebusiness.util;

import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpSession;
import com.ch.ebusiness.entity.BUser;

public class MyUtil {
    /**
     * 将实际的文件名重命名
     */
    public static String getNewFileName(String oldFileName) {
        int lastIndex = oldFileName.lastIndexOf(".");
        String fileType = oldFileName.substring(lastIndex);
        Date now = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("YYYYMMDDHHmmssSSS");
        String time = sdf.format(now);
        String newFileName = time + fileType;
        return newFileName;
    }

    /**
     * 获得用户信息
     */
    public static BUser getUser(HttpSession session) {
        BUser bUser = (BUser) session.getAttribute("bUser");
        return bUser;
    }
}

package com.ch.ebusiness.service.admin;

import org.springframework.ui.Model;

import com.ch.ebusiness.entity.GoodsType;

public interface TypeService {
    public String selectAllTypeByPage(Model model, int currentPage);

    public String delete(int id);

    public String addType(GoodsType goodsType);
}

package com.ch.ebusiness.service.admin;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.GoodsType;
import com.ch.ebusiness.repository.admin.TypeRepository;

@Service
public class TypeServiceImpl implements TypeService {
    @Autowired
    private TypeRepository typeRepository;

    @Override
    public String selectAllTypeByPage(Model model, int currentPage) {
        // 共多少个类型
        int totalCount = typeRepository.selectAll();
        // 计算共多少页
        int pageSize = 2;
        int totalPage = (int) Math.ceil(totalCount * 1.0 / pageSize);
        List<GoodsType> typeByPage = typeRepository.selectAllTypeByPage((currentPage - 1) * pageSize, pageSize);
        model.addAttribute("allTypes", typeByPage);
        model.addAttribute("totalPage", totalPage);
        model.addAttribute("currentPage", currentPage);
        return "admin/selectGoodsType";
    }

    @Override
    public String delete(int id) {
        List<Goods> list = typeRepository.selectGoods(id);
        if (list.size() > 0) {
            // 该类型下有商品不允许删除
            return "no";
        } else {
            typeRepository.deleteType(id);
            // 删除后回到查询页面
            return "/type/selectAllTypeByPage?currentPage=1";
        }
    }

    @Override
    public String addType(GoodsType goodsType) {
        typeRepository.addType(goodsType);
        return "redirect:/type/selectAllTypeByPage?currentPage=1";
    }
}

package com.ch.ebusiness.service.admin;

import org.springframework.ui.Model;

public interface UserAndOrderAndOutService {
    public String selectUser(Model model, int currentPage);

    public String deleteUser(Model model, int id);

    public String selectOrder(Model model, int currentPage);
}

package com.ch.ebusiness.service.before;

import javax.servlet.http.HttpSession;

import org.springframework.ui.Model;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.Order;

public interface CartService {
    public String putCart(Goods goods, Model model, HttpSession session);

    public String focus(Model model, HttpSession session, Integer gid);

    public String selectCart(Model model, HttpSession session, String act);

    public String deleteCart(HttpSession session, Integer gid);

    public String clearCart(HttpSession session);

    public String submitOrder(Order order, Model model, HttpSession session);

    public String pay(Order order);

    public String myFocus(Model model, HttpSession session);

    public String myOder(Model model, HttpSession session);

    public String orderDetail(Model model, Integer id);

    public String updateUpwd(HttpSession session, String bpwd);
}

package com.ch.ebusiness.service.before;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.Model;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.Order;
import com.ch.ebusiness.repository.before.CartRepository;
import com.ch.ebusiness.repository.before.IndexRepository;
import com.ch.ebusiness.util.MD5Util;
import com.ch.ebusiness.util.MyUtil;

@Service
public class CartServiceImpl implements CartService {
    @Autowired
    private CartRepository cartRepository;
    @Autowired
    private IndexRepository indexRepository;

    @Override
    public String putCart(Goods goods, Model model, HttpSession session) {
        Integer uid = MyUtil.getUser(session).getId();
        // 如果商品已在购物车，只更新购买数量
        if (cartRepository.isPutCart(uid, goods.getId()).size() > 0) {
            cartRepository.updateCart(uid, goods.getId(), goods.getBuyNumber());
        } else {// 新增到购物车
            cartRepository.putCart(uid, goods.getId(), goods.getBuyNumber());
        }
        // 跳转到查询购物车
        return "forward:/cart/selectCart";
    }

    @Override
    public String selectCart(Model model, HttpSession session, String act) {
        List<Map<String, Object>> list = cartRepository.selectCart(MyUtil.getUser(session).getId());
        double sum = 0;
        for (Map<String, Object> map : list) {
            sum = sum + (Double) map.get("smallsum");
        }
        model.addAttribute("total", sum);
        model.addAttribute("cartlist", list);
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        if ("toCount".equals(act)) {// 去结算页面
            return "user/count";
        }
        return "user/cart";
    }

    @Override
    public String focus(Model model, HttpSession session, Integer gid) {
        Integer uid = MyUtil.getUser(session).getId();
        List<Map<String, Object>> list = cartRepository.isFocus(uid, gid);
        // 判断是否已收藏
        if (list.size() > 0) {
            return "no";
        } else {
            cartRepository.focus(uid, gid);
            return "ok";
        }
    }

    @Override
    public String deleteCart(HttpSession session, Integer gid) {
        Integer uid = MyUtil.getUser(session).getId();
        cartRepository.deleteAgoods(uid, gid);
        return "forward:/cart/selectCart";
    }

    @Override
    public String clearCart(HttpSession session) {
        cartRepository.clear(MyUtil.getUser(session).getId());
        return "forward:/cart/selectCart";
    }

    @Override
    @Transactional
    public String submitOrder(Order order, Model model, HttpSession session) {
        order.setBusertable_id(MyUtil.getUser(session).getId());
        // 生成订单
        cartRepository.addOrder(order);
        // 生成订单详情
        cartRepository.addOrderDetail(order.getId(), MyUtil.getUser(session).getId());
        // 减少商品库存
        List<Map<String, Object>> listGoods = cartRepository.selectGoodsShop(MyUtil.getUser(session).getId());
        for (Map<String, Object> map : listGoods) {
            cartRepository.updateStore(map);
        }
        // 清空购物车
        cartRepository.clear(MyUtil.getUser(session).getId());
        model.addAttribute("order", order);
        return "user/pay";
    }

    @Override
    public String pay(Order order) {
        cartRepository.pay(order.getId());
        return "ok";
    }

    @Override
    public String myFocus(Model model, HttpSession session) {
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        model.addAttribute("myFocus", cartRepository.myFocus(MyUtil.getUser(session).getId()));
        return "user/myFocus";
    }

    @Override
    public String myOder(Model model, HttpSession session) {
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        model.addAttribute("myOrder", cartRepository.myOrder(MyUtil.getUser(session).getId()));
        return "user/myOrder";
    }

    @Override
    public String orderDetail(Model model, Integer id) {
        model.addAttribute("orderDetail", cartRepository.orderDetail(id));
        return "user/orderDetail";
    }

    @Override
    public String updateUpwd(HttpSession session, String bpwd) {
        Integer uid = MyUtil.getUser(session).getId();
        cartRepository.updateUpwd(uid, MD5Util.MD5(bpwd));
        return "forward:/user/toLogin";
    }
}

package com.ch.ebusiness.service.before;

import org.springframework.ui.Model;

public interface IndexService {
    public String index(Model model, Integer tid);

    public String goodsDetail(Model model, Integer id);

    public String search(Model model, String mykey);
}

package com.ch.ebusiness.service.before;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;

import com.ch.ebusiness.repository.before.IndexRepository;

@Service
public class IndexServiceImpl implements IndexService {
    @Autowired
    private IndexRepository indexRepository;

    @Override
    public String index(Model model, Integer tid) {
        if (tid == null)
            tid = 0;
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        // 推荐商品
        model.addAttribute("recommendGoods", indexRepository.selectRecommendGoods(tid));
        // 最新商品
        model.addAttribute("lastedGoods", indexRepository.selectLastedGoods(tid));
        return "user/index";
    }

    @Override
    public String goodsDetail(Model model, Integer id) {
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        // 商品详情
        model.addAttribute("goods", indexRepository.selectAGoods(id));
        return "user/goodsDetail";
    }

    @Override
    public String search(Model model, String mykey) {
        // 广告区商品
        model.addAttribute("advertisementGoods", indexRepository.selectAdvertisementGoods());
        // 导航栏商品类型
        model.addAttribute("goodsType", indexRepository.selectGoodsType());
        // 商品搜索
        model.addAttribute("searchgoods", indexRepository.search(mykey));
        return "user/searchResult";
    }
}

package com.ch.ebusiness.service.before;

import javax.servlet.http.HttpSession;

import org.springframework.ui.Model;

import com.ch.ebusiness.entity.BUser;

public interface UserService {
    public String isUse(BUser bUser);

    public String register(BUser bUser);

    public String login(BUser bUser, HttpSession session, Model model);
}

package com.ch.ebusiness.service.before;

import java.util.List;

import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;
import com.ch.ebusiness.entity.BUser;
import com.ch.ebusiness.repository.before.UserRepository;
import com.ch.ebusiness.util.MD5Util;

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserRepository userRepository;

    @Override
    public String isUse(BUser bUser) {
        if (userRepository.isUse(bUser).size() > 0) {
            return "no";
        }
        return "ok";
    }

    @Override
    public String register(BUser bUser) {
        // 对密码MD5加密
        bUser.setBpwd(MD5Util.MD5(bUser.getBpwd()));
        if (userRepository.register(bUser) > 0) {
            return "user/login";
        }
        return "user/register";
    }

    @Override
    public String login(BUser bUser, HttpSession session, Model model) {
        // 对密码MD5加密
        bUser.setBpwd(MD5Util.MD5(bUser.getBpwd()));
        String rand = (String) session.getAttribute("rand");
        if (!rand.equalsIgnoreCase(bUser.getCode())) {
            model.addAttribute("errorMessage", "验证码错误！");
            return "user/login";
        }
        List<BUser> list = userRepository.login(bUser);
        if (list.size() > 0) {
            session.setAttribute("bUser", list.get(0));
            return "redirect:/";// 到首页
        }
        model.addAttribute("errorMessage", "用户名或密码错误！");
        return "user/login";
    }
}

package com.ch.ebusiness.controller.admin;

import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import com.ch.ebusiness.NoLoginException;
@Controller
public class AdminBaseController {
    /**
     * 登录权限控制，处理方法执行前执行该方法 
     */
    @ModelAttribute  
    public void isLogin(HttpSession session) throws NoLoginException {      
       if(session.getAttribute("auser") == null){  
            throw new NoLoginException("没有登录");
       }  
    } 
}

package com.ch.ebusiness.controller.admin;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ch.ebusiness.entity.AUser;
import com.ch.ebusiness.service.admin.AdminService;

@Controller
@RequestMapping("/admin")
public class AdminController {
    @Autowired
    private AdminService adminService;

    @RequestMapping("/toLogin")
    public String toLogin(@ModelAttribute("aUser") AUser aUser) {
        return "admin/login";
    }

    @RequestMapping("/login")
    public String login(@ModelAttribute("aUser") AUser aUser, HttpSession session, Model model) {
        return adminService.login(aUser, session, model);
    }
}

package com.ch.ebusiness.controller.admin;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.service.admin.GoodsService;

@Controller
@RequestMapping("/goods")
public class GoodsController extends AdminBaseController {
    @Autowired
    private GoodsService goodsService;

    @RequestMapping("/selectAllGoodsByPage")
    public String selectAllGoodsByPage(Model model, int currentPage, String act) {
        return goodsService.selectAllGoodsByPage(model, currentPage, act);
    }

    @RequestMapping("/toAddGoods")
    public String toAddGoods(@ModelAttribute("goods") Goods goods, Model model) {
        goods.setIsAdvertisement(0);
        goods.setIsRecommend(1);
        return goodsService.toAddGoods(goods, model);
    }

    @RequestMapping("/addGoods")
    public String addGoods(@ModelAttribute("goods") Goods goods, HttpServletRequest request, String act)
            throws IllegalStateException, IOException {
        return goodsService.addGoods(goods, request, act);
    }

    @RequestMapping("/detail")
    public String detail(Model model, Integer id, String act) {
        return goodsService.detail(model, id, act);
    }

    @RequestMapping("/delete")
    @ResponseBody
    public String delete(Integer id) {
        return goodsService.delete(id);
    }
}

package com.ch.ebusiness.controller.admin;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.ch.ebusiness.entity.GoodsType;
import com.ch.ebusiness.service.admin.TypeService;

@Controller
@RequestMapping("/type")
public class TypeController extends AdminBaseController {
    @Autowired
    private TypeService typeService;

    @RequestMapping("/selectAllTypeByPage")
    public String selectAllTypeByPage(Model model, int currentPage) {
        return typeService.selectAllTypeByPage(model, currentPage);
    }

    @RequestMapping("/deleteType")
    @ResponseBody // 返回字符串数据而不是视图
    public String delete(int id) {
        return typeService.delete(id);
    }

    @RequestMapping("/toAddType")
    public String toAddType(@ModelAttribute("goodsType") GoodsType goodsType) {
        return "admin/addType";
    }

    @RequestMapping("/addType")
    public String addType(@ModelAttribute("goodsType") GoodsType goodsType) {
        return typeService.addType(goodsType);
    }
}

package com.ch.ebusiness.controller.admin;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.ch.ebusiness.entity.AUser;
import com.ch.ebusiness.service.admin.UserAndOrderAndOutService;

@Controller
public class UserAndOrderAndOutController extends AdminBaseController {
    @Autowired
    private UserAndOrderAndOutService userAndOrderAndOutService;

    @RequestMapping("/loginOut")
    public String loginOut(@ModelAttribute("aUser") AUser aUser, HttpSession session) {
        session.invalidate();
        return "admin/login";
    }

    @RequestMapping("/selectUser")
    public String selectUser(Model model, int currentPage) {
        return userAndOrderAndOutService.selectUser(model, currentPage);
    }

    @RequestMapping("/deleteUser")
    @ResponseBody
    public String deleteUser(Model model, int id) {
        return userAndOrderAndOutService.deleteUser(model, id);
    }

    @RequestMapping("/selectOrder")
    public String selectOrder(Model model, int currentPage) {
        return userAndOrderAndOutService.selectOrder(model, currentPage);
    }
}

package com.ch.ebusiness;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
//配置扫描MyBatis接口的包路径
@MapperScan(basePackages = { "com.ch.ebusiness.repository" })
public class EBusinessApplication {
    public static void main(String[] args) {
        SpringApplication.run(EBusinessApplication.class, args);
    }
}

package com.ch.ebusiness;

import java.sql.SQLException;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
 * 统一异常处理
 */
@ControllerAdvice
public class GlobalExceptionHandleController {
    @ExceptionHandler(value = Exception.class)
    public String exceptionHandler(Exception e, Model model) {
        String message = "";
        // 数据库异常
        if (e instanceof SQLException) {
            message = "数据库异常";
        } else if (e instanceof NoLoginException) {
            message = "未登录异常";
        } else {// 未知异常
            message = "未知异常";
        }
        model.addAttribute("mymessage", message);
        return "myError";
    }
}

package com.ch.ebusiness.controller.before;

import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import com.ch.ebusiness.NoLoginException;

@Controller
public class BeforeBaseController {
    /**
     * 登录权限控制，处理方法执行前执行该方法
     */
    @ModelAttribute
    public void isLogin(HttpSession session) throws NoLoginException {
        if (session.getAttribute("bUser") == null) {
            throw new NoLoginException("没有登录");
        }
    }
}

package com.ch.ebusiness.controller.before;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.ch.ebusiness.entity.Goods;
import com.ch.ebusiness.entity.Order;
import com.ch.ebusiness.service.before.CartService;

@Controller
@RequestMapping("/cart")
public class CartController extends BeforeBaseController {
    @Autowired
    private CartService cartService;

    @RequestMapping("/putCart")
    public String putCart(Goods goods, Model model, HttpSession session) {
        return cartService.putCart(goods, model, session);
    }

    @RequestMapping("/focus")
    @ResponseBody
    public String focus(@RequestBody Goods goods, Model model, HttpSession session) {
        return cartService.focus(model, session, goods.getId());
    }

    @RequestMapping("/selectCart")
    public String selectCart(Model model, HttpSession session, String act) {
        return cartService.selectCart(model, session, act);
    }

    @RequestMapping("/deleteCart")
    public String deleteCart(HttpSession session, Integer gid) {
        return cartService.deleteCart(session, gid);
    }

    @RequestMapping("/clearCart")
    public String clearCart(HttpSession session) {
        return cartService.clearCart(session);
    }

    @RequestMapping("/submitOrder")
    public String submitOrder(Order order, Model model, HttpSession session) {
        return cartService.submitOrder(order, model, session);
    }

    @RequestMapping("/pay")
    @ResponseBody
    public String pay(@RequestBody Order order) {
        return cartService.pay(order);
    }

    @RequestMapping("/myFocus")
    public String myFocus(Model model, HttpSession session) {
        return cartService.myFocus(model, session);
    }

    @RequestMapping("/myOder")
    public String myOder(Model model, HttpSession session) {
        return cartService.myOder(model, session);
    }

    @RequestMapping("/orderDetail")
    public String orderDetail(Model model, Integer id) {
        return cartService.orderDetail(model, id);
    }

    @RequestMapping("/userInfo")
    public String userInfo() {
        return "user/userInfo";
    }

    @RequestMapping("/updateUpwd")
    public String updateUpwd(HttpSession session, String bpwd) {
        return cartService.updateUpwd(session, bpwd);
    }
}

package com.ch.ebusiness.controller.before;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ch.ebusiness.service.before.IndexService;

@Controller
public class IndexController {
    @Autowired
    private IndexService indexService;

    @RequestMapping("/")
    public String index(Model model, Integer tid) {
        return indexService.index(model, tid);
    }

    @RequestMapping("/goodsDetail")
    public String goodsDetail(Model model, Integer id) {
        return indexService.goodsDetail(model, id);
    }

    @RequestMapping("/search")
    public String search(Model model, String mykey) {
        return indexService.search(model, mykey);
    }
}

package com.ch.ebusiness.controller.before;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.ch.ebusiness.entity.BUser;
import com.ch.ebusiness.service.before.UserService;

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping("/toRegister")
    public String toRegister(@ModelAttribute("bUser") BUser bUser) {
        return "user/register";
    }

    @RequestMapping("/toLogin")
    public String toLogin(@ModelAttribute("bUser") BUser bUser) {
        // @ModelAttribute("bUser")与th:object="${bUser}"相对应
        return "user/login";
    }

    @RequestMapping("/login")
    public String login(@ModelAttribute("bUser") @Validated BUser bUser, BindingResult rs, HttpSession session,
            Model model) {
        if (rs.hasErrors()) {// 验证失败
            return "user/login";
        }
        return userService.login(bUser, session, model);
    }

    @RequestMapping("/isUse")
    @ResponseBody
    public String isUse(@RequestBody BUser bUser) {
        return userService.isUse(bUser);
    }

    @RequestMapping("/register")
    public String register(@ModelAttribute("bUser") @Validated BUser bUser, BindingResult rs) {
        if (rs.hasErrors()) {// 验证失败
            return "user/register";
        }
        return userService.register(bUser);
    }
}

package com.ch.ebusiness.controller.before;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class ValidateCodeController {
    private char code[] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't',
            'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q',
            'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7', '8', '9' };
    private static final int WIDTH = 50;
    private static final int HEIGHT = 20;
    private static final int LENGTH = 4;

    @RequestMapping("/validateCode")
    public void validateCode(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // TODO Auto-generated method stub
        // 设置响应报头信息
        response.setHeader("Pragma", "No-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);
        // 设置响应的MIME类型
        response.setContentType("image/jpeg");

        BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
        Font mFont = new Font("Arial", Font.TRUETYPE_FONT, 18);
        Graphics g = image.getGraphics();
        Random rd = new Random();

        // 设置背景颜色
        g.setColor(new Color(rd.nextInt(55) + 200, rd.nextInt(55) + 200, rd.nextInt(55) + 200));
        g.fillRect(0, 0, WIDTH, HEIGHT);

        // 设置字体
        g.setFont(mFont);

        // 画边框
        g.setColor(Color.black);
        g.drawRect(0, 0, WIDTH - 1, HEIGHT - 1);

        // 随机产生的验证码
        String result = "";
        for (int i = 0; i < LENGTH; ++i) {
            result += code[rd.nextInt(code.length)];
        }
        HttpSession se = request.getSession();
        se.setAttribute("rand", result);

        // 画验证码
        for (int i = 0; i < result.length(); i++) {
            g.setColor(new Color(rd.nextInt(200), rd.nextInt(200), rd.nextInt(200)));
            g.drawString(result.charAt(i) + "", 12 * i + 1, 16);
        }

        // 随机产生2个干扰线
        for (int i = 0; i < 2; i++) {
            g.setColor(new Color(rd.nextInt(200), rd.nextInt(200), rd.nextInt(200)));
            int x1 = rd.nextInt(WIDTH);
            int x2 = rd.nextInt(WIDTH);
            int y1 = rd.nextInt(HEIGHT);
            int y2 = rd.nextInt(HEIGHT);
            g.drawLine(x1, y1, x2, y2);
        }

        // 释放图形资源
        g.dispose();
        try {
            OutputStream os = response.getOutputStream();

            // 输出图像到页面
            ImageIO.write(image, "JPEG", os);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}