controller中的代码 1 package com.neuedu.controller;
2
3 import org.springframework.stereotype.Controller;
4 import org.springframework.web.bind.annotation.PathVariable;
5 import org.springframework.web.bind.annotation.RequestMapping;
6 import org.springframework.web.bind.annotation.RequestMethod;
7 import org.springframework.web.bind.annotation.RequestParam;
8 import org.springframework.web.bind.annotation.ResponseBody;
9
10 @Controller
11 public class AController {
12 private static String SUCCESS="success";
13
14 用于测试是否能正常运行
15 @RequestMapping("/sayHello")
16 public String sayHello(){
17 return SUCCESS;
18 }
19 测试get请求
20 @RequestMapping(value="/order/{id}" ,method=RequestMethod.GET)
21 public String getOrderById1(@PathVariable(value="id") Integer id){
22 System.out.println(id);
23 return SUCCESS;
24 }
25 测试post请求
26 @RequestMapping(value="/order/{id}" ,method=RequestMethod.POST)
27 public String getOrderById2(@PathVariable(value="id") Integer id){
28 System.out.println(id);
29 return SUCCESS;
30 }
31 测试put
32 @RequestMapping(value="/order/{id}" ,method=RequestMethod.PUT)
33 @ResponseBody()
34 public String getOrderById3(@PathVariable(value="id") Integer id){
35 System.out.println(id);
36 return SUCCESS;
37 }
38 测试delete
39 @RequestMapping(value="/order/{id}" ,method=RequestMethod.DELETE)
40 @ResponseBody()
41 public String getOrderById4(@PathVariable(value="id") Integer id){
42 System.out.println(id);
43 return SUCCESS;
44 }
45 测试@RequestParam得到jsp中的值
46 @RequestMapping(value="/testRequstPamarm" ,method=RequestMethod.POST)
47 public String testRequstPamarm(@RequestParam("username") String name,@RequestParam("pwd") String pwd){
48 System.out.println("用户名："+name);
49 System.out.println("密码："+pwd);
50 return SUCCESS;
51 }
53 }
jsp代码 1 <body>
2 <a href="${pageContext.request.contextPath}/sayHello">Hello!</a>
3 <br>测试get
4 <a href="${pageContext.request.contextPath}/order/1">测试GET</a>
5 <br>测试post请求
6 <form action="${pageContext.request.contextPath}/order/2" method="post">
7 <input type="submit" value="提交">
8 </form>
9 <br>测试put
10 <form action="${pageContext.request.contextPath}/order/3" method="post">
11 <input type="hidden" name="_method" value="put">
12 <input type="submit" value="提交">
13 </form>
14 <br>测试delete
15 <form action="${pageContext.request.contextPath}/order/4" method="post">
16 <input type="hidden" name="_method" value="DELETE">
17 <input type="submit" value="提交">
18 </form>
19 <br>测试@RequestParam得到表单中的值
20 <form action="${pageContext.request.contextPath}/testRequstPamarm" method="post">
21 用户名：<input type="text" name="username">
22 <br>
23 密 码：<input type="text" name="pwd">
24 <br>
25 <input type="submit" value="提交">
26 </form>
27 </body>
get可以用超链接，post只能用from表单，put和delete要在post基础上加上<input name="_method" value="">还要注意put和delete还需要在web.xml中配置过滤器filter，代码如下：
1 <filter> 2 <filter-name>hiddenHttpMethodFilter</filter-name> 3 <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> 4 </filter> 5 <filter-mapping> 6 <filter-name>hiddenHttpMethodFilter</filter-name> 7 <url-pattern>/*</url-pattern> 8 </filter-mapping>
用@RequestParam得到表单中的值编码问题需要在web-xml中加入下面代码：（注意此代码要放在过滤器上面）
1 <filter> 2 <filter-name>CharacterEncodingFilter</filter-name> 3 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 4 <init-param> 5 <param-name>encoding</param-name> 6 <param-value>utf-8</param-value> 7 </init-param> 8 </filter> 9 <filter-mapping> 10 <filter-name>CharacterEncodingFilter</filter-name> 11 <url-pattern>/*</url-pattern> 12 </filter-mapping>
web-xml中的其他配置：
1 <!-- The front controller of this Spring Web application, responsible for handling all application requests --> 2 <servlet> 3 <servlet-name>springDispatcherServlet</servlet-name> 4 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 5 <!-- <init-param> 6 <param-name>contextConfigLocation</param-name> 7 <param-value>classpath:springmvc.xml</param-value> 8 </init-param> --> 9 <load-on-startup>1</load-on-startup> 10 </servlet> 11 12 <!-- Map all requests to the DispatcherServlet for handling --> 13 <servlet-mapping> 14 <servlet-name>springDispatcherServlet</servlet-name> 15 <url-pattern>/</url-pattern> 16 </servlet-mapping>
springDispatcherServlet-servlet.xml中的配置：
1 <context:component-scan base-package="com.neuedu.controller"></context:component-scan> 2 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 3 <property name="prefix" value="/WEB-INF/views/"></property> 4 <property name="suffix" value=".jsp"></property> 5 </bean>
时间： 2024-08-05 02:53:38