Java笔记之SSM项目整合
1.新建Dynamic Web Project项目ssm
2.导入jar包,并Build Path
3.配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <!-- 配置Spring的监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置Spring的配置文件位置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 配置SpringMVC的前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置SpringMVC的配置文件位置 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <!-- 拦截所有请求 --> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 配置post请求的编码过滤器 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <!-- 设置编码方式为UTF-8 --> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <!-- 过滤所有请求 --> <url-pattern>/*</url-pattern> </filter-mapping> <display-name>ssm</display-name> <welcome-file-list> <welcome-file>/WEB-INF/jsp/index.jsp</welcome-file> </welcome-file-list> </web-app>
4.配置jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/keeper?characterEncoding=utf-8 jdbc.username=root jdbc.password=123456
5.配置applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx https://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 开启注解扫描,指定基础包下的所有类对象都交给Spring创建和管理 --> <context:component-scan base-package="com.ssm.service"></context:component-scan> <context:component-scan base-package="com.ssm.serviceImpl"></context:component-scan> <!-- 加载jdbc配置文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置数据库资源池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <!-- 配置会话工厂 --> <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <!-- 配置mybatis配置文件位置 --> <property name="configLocation" value="classpath:mybatisConfig.xml"></property> </bean> <!-- 配置事务管理 --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置事务通知 --> <tx:advice id="txAdvice" transaction-manager="txManager"> <tx:attributes> <tx:method name="get*" propagation="SUPPORTS"/> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <!-- 配置切面 --> <aop:config> <aop:pointcut expression="execution(* com.ssm.serviceImpl.*.*(..))" id="pointCut"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"/> </aop:config> <!-- 配置Mapper扫描器,使用会话工厂创建Mapper的代理对象并注入Spring容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.ssm.mapper"></property> </bean> </beans>
6.配置springmvc.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!-- 开启注解扫描,配置Controller类所在的包信息 --> <context:component-scan base-package="com.ssm.controller"></context:component-scan> <!-- 配置SpringMVC的注解驱动,默认添加注解形式的处理器映射器和处理器适配器,以及一系列的消息转换器 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 访问静态资源 --> <mvc:default-servlet-handler/> <!-- 配置视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> <!-- 配置文件上传解析器,这里的id一定要配置成multipartResolver,否则会报错 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 设置上传文件的最大大小,这里设置的是10M(=10*1024*1024) --> <property name="maxUploadSize" value="10485760"></property> </bean> </beans>
7.配置mybatisConfig.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <!-- 开启驼峰命名规则映射 --> <setting name="mapUnderscoreToCamelCase" value="true"/> <!-- 开启延时加载 --> <setting name="lazyLoadingEnabled" value="true"/> <!-- 将积极加载改为消极加载,也就是按需加载 --> <setting name="aggressiveLazyLoading" value="false"/> </settings> <!-- 为该包下的类起别名 --> <typeAliases> <package name="com.ssm.bean"/> </typeAliases> <!-- 配置Mapper映射文件的位置 --> <mappers> <package name="com.ssm.mapper"/> </mappers> </configuration>
8.配置日志文件log4j.properties
log4j.rootLogger=DEBUG,stdout,FILE log4j.addivity.org.apache=true #stdout输出到控制台 log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%-5p - %m%n #FILE输出到文件,每天产生一个文件 log4j.appender.FILE=org.apache.log4j.DailyRollingFileAppender #日志文件的位置 log4j.appender.FILE.File=G:/log/ssm.log #日志文件的编码方式 log4j.appender.FILE.File.Encoding=utf-8 log4j.appender.FILE.DatePattern="'_'yyyyMMdd" #当天的日志使用追加的方式写入日志文件 log4j.appender.FILE.Append=true log4j.appender.FILE.layout=org.apache.log4j.PatternLayout #日志的格式 log4j.appender.FILE.layout.ConversionPattern=%-5p %c - %m%n
9.新建Student类
package com.ssm.bean; public class Student { private Integer studentId; private String studentName; private Integer studentAge; public Integer getStudentId() { return studentId; } public void setStudentId(Integer studentId) { this.studentId = studentId; } public String getStudentName() { return studentName; } public void setStudentName(String studentName) { this.studentName = studentName; } public Integer getStudentAge() { return studentAge; } public void setStudentAge(Integer studentAge) { this.studentAge = studentAge; } @Override public String toString() { return "Student [studentId=" + studentId + ", studentName=" + studentName + ", studentAge=" + studentAge + "]"; } }
10.新建StudentController类
package com.ssm.controller; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.ssm.bean.Student; import com.ssm.service.StudentService; @Controller @RequestMapping("/student") public class StudentController { @Resource private StudentService studentService; @RequestMapping("/getAllStudents") public String getAll(HttpServletRequest request){ List<Student> students = studentService.getAll(); request.setAttribute("students", students); return "students"; } }
11.新建FileController类
package com.ssm.controller; import java.io.File; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.multipart.MultipartFile; @Controller @RequestMapping("/file") public class FileController { @RequestMapping("/init") public String init(){ return "fileupload"; } @RequestMapping("/upload") public String upload(HttpServletRequest request,MultipartFile myFile){ String fileName=myFile.getOriginalFilename(); String dest = request.getServletContext().getRealPath("/upload"); File destFile=new File(dest,fileName); if (!destFile.exists()) { destFile.mkdirs(); } try { myFile.transferTo(destFile); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } request.setAttribute("message", "上传成功"); return "fileupload"; } }
12.新建JsonController类
package com.ssm.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.ssm.bean.Student; @Controller @RequestMapping("/json") public class JsonController { @RequestMapping("/init") public String init(){ return "json"; } @RequestMapping("/dealJson") @ResponseBody public Student dealJson(@RequestBody Student student){ return student; } }
13.新建StudentMapper接口
package com.ssm.mapper; import java.util.List; import com.ssm.bean.Student; public interface StudentMapper { public List<Student> getAll(); }
14.新建StudentMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ssm.mapper.StudentMapper">
<select id="getAll" resultType="Student">
select * from t_student
</select>
</mapper>
15.新建StudentService接口
package com.ssm.service; import java.util.List; import com.ssm.bean.Student; public interface StudentService { public List<Student> getAll(); }
16.新建StudentServiceImpl类,实现StudentService接口
package com.ssm.serviceImpl; import java.util.List; import javax.annotation.Resource; import org.springframework.stereotype.Service; import com.ssm.bean.Student; import com.ssm.mapper.StudentMapper; import com.ssm.service.StudentService; @Service public class StudentServiceImpl implements StudentService { @Resource private StudentMapper StudentMapper; @Override public List<Student> getAll() { return StudentMapper.getAll(); } }
17.WEB-INF下的jsp文件夹新建index.jsp、students.jsp、fileupload.jsp、json.jsp
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>默认页面</title> </head> <body> <a href="student/getAllStudents">查询所有的学生信息</a><br> <a href="file/init">上传文件</a><br> <a href="json/init">json</a> </body> </html>
students.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>学生列表</title> </head> <body> ${message } <table> <tr> <th>ID</th> <th>姓名</th> <th>年龄</th> </tr> <c:forEach items="${students }" var="stu"> <tr> <td>${stu.studentId }</td> <td>${stu.studentName }</td> <td>${stu.studentAge }</td> </tr> </c:forEach> </table> </body> </html>
fileupload.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>文件上传</title> </head> <body> <form action="upload" method="post" enctype="multipart/form-data"> <input type="file" name="myFile"/><br> <button type="submit">上传</button> </form> <hr> ${message } </body> </html>
json.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Json请求和响应</title> <script type="text/javascript" src="../static/js/jquery-1.12.4.min.js"></script> </head> <body> ID:<input type="text" id="studentId"/><br> 姓名:<input type="text" id="studentName"/><br> 年龄:<input type="text" id="studentAge"/><br> <button type="button" onclick="doSent();">发送</button> <script type="text/javascript"> function doSent(){ var studentId=document.getElementById("studentId").value; var studentName=document.getElementById("studentName").value; var studentAge=document.getElementById("studentAge").value; $.ajax({ url:"dealJson", type:"post", contentType:"application/json;charset=utf-8", data:JSON.stringify({"studentId":studentId,"studentName":studentName,"studentAge":studentAge}), success:function(data){ alert(data.studentId+"---"+data.studentName+"---"+data.studentAge); } }); } </script> </body> </html>
18.WebContent下新建static文件夹,在其中新建js文件夹,拷入jquery的js文件
19.数据准备
新建t_student表
USE keeper; DROP TABLE IF EXISTS `t_student`; CREATE TABLE `t_student` ( `student_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '学生ID', `student_name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '学生姓名', `student_age` int(11) NULL DEFAULT NULL COMMENT '学生年龄', PRIMARY KEY (`student_id`) USING BTREE ) ENGINE = InnoDB AUTO_INCREMENT = 11 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
导入数据
USE keeper; INSERT INTO `t_student` VALUES (2, '李逵', 24); INSERT INTO `t_student` VALUES (3, '王五', 25); INSERT INTO `t_student` VALUES (4, '赵六', 26); INSERT INTO `t_student` VALUES (5, '韩七', 27); INSERT INTO `t_student` VALUES (6, '小明', 10); INSERT INTO `t_student` VALUES (7, '张无忌', 25); INSERT INTO `t_student` VALUES (8, '张三丰', 100); INSERT INTO `t_student` VALUES (9, '赵云', 27); INSERT INTO `t_student` VALUES (10, '赵三', 24);
20.启动项目,访问index.jsp页面,可以进行三项操作
