JAVA 框架-Springmvc

web.xml配置文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
<?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-mvc文件 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param><!-- 如果不写这个spring会自动去WEB-INF下找springmvc-servlet.xml文件 -->
            <param-name>contextConfigLocation</param-name><!-- 固定的名字,不能改变 -->
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup><!-- 服务器启动时加载 -->
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.do</url-pattern><!--接收所有以.do结尾的请求-->
    </servlet-mapping>
    <!--配置中文过滤器 -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

 spring-mvc.xml配置文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
<?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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<context:component-scan base-package="com.hanqi.controller"></context:component-scan><!--注解扫描器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 视图解析器 -->
    <property name="prefix" value="/WEB-INF/page/"></property>
    <property name="suffix" value=".jsp"></property>
</bean>
<mvc:annotation-driven><!--配置spring消息转换器-->
    <mvc:message-converters register-defaults="false"><!--不使用spring默认提供的转换器-->
        <bean class="org.springframework.http.converter.StringHttpMessageConverter"></bean>
        <bean class= "org.springframework.http.converter.ByteArrayHttpMessageConverter"></bean>
        <bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter"></bean>
        <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
            <property name="supportedMediaTypes"><!-- 加入支持的媒体类型:返回contentType -->
                <list>
                    <value>text/html;charset=utf-8</value><!-- 这里顺序不能反,一定先写text/html, 不然ie下会出现下载提示 -->
                    <value>application/json;charset=utf-8</value>
                </list>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>
</beans>

 Appuser实体类文件

AppuserController类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
package com.hanqi.controller;
 
import static org.springframework.test.web.client.response.MockRestResponseCreators.withBadRequest;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.request;
 
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;
 
import com.hanqi.model.Appuser;
 
@SessionAttributes("orgUser")//该注解只能修饰类,当使用model设置属性时,会自动将model里属性名为orgUser的键值对放到session里
//可以传多个({"",""})model也需要设置多个
@Controller//声明当前类为控制器类
@RequestMapping("/appuser")//定义接收的请求
public class AppuserController {
    //参数传递
    @RequestMapping("/login")//定义接受的请求
    public String login(@RequestParam("uname")String uname,String pword,@DateTimeFormat(pattern="yyyy-MM-dd")String birthday) {
        System.out.println("用户名为"+ uname);
        System.out.println("密码为"+ pword);
        System.out.println("生日为" + birthday);
        return "index";
    }
    //实体传递,当传递带日期型参数的实体类时需要在类的成员变量上注解@DateTimeFormat(pattern="yyyy-MM-dd")
    //否则会报400错误
    @RequestMapping("/register")
    public String register(Appuser user) {
        System.out.println("用户名为"+user.getUname() );
        System.out.println("密码为"+ user.getPword());
        return "index";
    }
    //页面跳转
    /*@RequestMapping(value="/{path}")//以路径作为请求参数
    public String toPage(@PathVariable("path")String page) {
        return page;
    }*/
    @ResponseBody//当向前台返回字符串时需要再加上这个注解
    public String select() {
        return null;
    }
    //使用ModelAndView
    //springmvc中,如果不设置视图的名字,会默认以请求路径作为视图名
    @RequestMapping("login1")
    //defaultValue如果找不到会以此值为默认值,required默认为true,表示请求参数必须存在,可为空字符串但不能为null
    public ModelAndView login1(@RequestParam(value="uname",defaultValue="uname",required=false)String uname,String pword,ModelAndView mav) {
        Appuser user = new Appuser();
        user.setUname(uname);
        user.setPword(pword);
        if("admin".equals(uname)&& "123".equals(pword)) {
            mav.addObject("orgUser", user);
            mav.setViewName("index");
        }
        return mav;
    }
    //使用Model
    @RequestMapping(value="login2",method={RequestMethod.POST})//设置接收的请求为post请求,常用的还有get,delete,put,如果不匹配会报405错误
    public String login2(String uname,String pword,Model model) {//同样也可以传入session,request对象进行属性设置
        Appuser user = new Appuser();
        user.setUname(uname);
        user.setPword(pword);
        if("admin".equals(uname)&& "123".equals(pword)) {
            model.addAttribute("orgUser", user);
        }
        return "index";
    }
    //在视图层可以拿到orgUser的值
}

 @ModelAttribute用法

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
package com.hanqi.controller;
 
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.hanqi.model.Appuser;
@Controller
@RequestMapping("/appuser")
public class TestController {
    /*@ModelAttribute用法
    1.单独修饰方法时,优先于其他方法执行,同时设置一个属性;
    2.与requestMapping同时修饰时,请求路径作为视图层,返回值作为属性值放到request对象中;
    3.修饰参数时,该参数不再接受请求,而是接收注解修饰方法中的参数*/
    //第一种
    @ModelAttribute("username")
    public String getUname(String uname) {
        System.out.println("getUname: " + uname);
        // request.setAttribute("username", uname);
        return uname;
    }
 
    @RequestMapping("/login4")
    public String testAttribute1(String uname) {
        System.out.println("testAttribute1: " + uname);
        return "index";
    }
    //第二种
    @ModelAttribute("test")
    @RequestMapping("testModelAttribute2")
    public String testAttribute2(String uname) {
        System.out.println("testAttribute2: " + uname);
        // request.setAttribute("test", "success");
        return "success";
    }
    //第三种
    @ModelAttribute("user")
    public Appuser getUser(Appuser user) {
        user.setPword("1111");
        return user;
    }
    @RequestMapping("/login4")
    public String login4(@ModelAttribute("user")Appuser user) {
        return "index";
    }
}

 

posted @   w944372441  阅读(107)  评论(0编辑  收藏  举报
努力加载评论中...
点击右上角即可分享
微信分享提示