SpringMVCTest.java
package com.wxh.springmvc.handlers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestHeader;
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;
@RequestMapping("/springmvc")
@Controller
public class SpringMVCTest {
private static final String SUCCESS = "success";
/**
* 了解：
* @CookieValue:映射一个Cookie 值，属性同@RequestParam
*/
@RequestMapping("/testCookieValue")
public String testCookieValue(@CookieValue("JSESSIONID") String sessionId){
System.out.println("testCookieValue: sessionId: " + sessionId);
return SUCCESS;
}
/**
* 了解：
* 映射请求头信息
* 用法同@RequestParam
* @return
*/
@RequestMapping("/testRequestHeader")
public String testRequestHeader(@RequestHeader(value="Accept-Language") String al){
System.out.println("testRequestHeader, Accept-Language: " + al);
return SUCCESS;
}
/**
*
* @RequestParam 来映射请求参数
* value 值即请求参数的参数名
* required 该参数是否必须，默认为true
* defaultValue 请求参数的默认值
*/
@RequestMapping("/testRequestParam")
public String testRequestParam(@RequestParam(value="username") String un,
@RequestParam(value="age",required=false,defaultValue="0") int age){
System.out.println("testRequestParam,username "+un+",age: "+age);
return SUCCESS;
}
/**
* Rest 风格的URL
* 以CRUD为例：
* 新增： /order POST
* 修改：/order/1 PUT update?id=1
* 获取：/order/1 GET get?id=1
* 删除：/order/1 DELETE delete?id=1
*
* 如何发送 PUT 请求和DELETE 请求呢？
* 1.需要配置HiddenHttpMethodFilter
* 2.需要发送POST请求
* 3.需要在发送POST 请求时携带一个name="_method" de 隐藏域，值为DELETE 或 PUT
*
* 在SpringMVC中的目标方法中如何得到id呢？
* 使用@PathVariable 注解
*
* @param id
* @return
*/
@ResponseBody()//加上此注解解决405的问题
@RequestMapping(value="/testRest/{id}",method=RequestMethod.PUT)
public String testRestPut(@PathVariable Integer id){
System.out.println("testRest PUT: "+id);
return SUCCESS;
}
@RequestMapping(value="/testRest/{id}",method=RequestMethod.DELETE)
@ResponseBody()//加上此注解解决405的问题
public String testRestDelete(@PathVariable Integer id){
System.out.println("testRest Delete: "+id);
return SUCCESS;
}
@RequestMapping(value="/testRest",method=RequestMethod.POST)
public String testRest(){
System.out.println("testRest POST ");
return SUCCESS;
}
@RequestMapping(value="/testRest/{id}",method=RequestMethod.GET)
public String testRest(@PathVariable Integer id){
System.out.println("testRest GET: "+id);
return SUCCESS;
}
/**
* @PathVariable 可以来映射URL中的占位符到目标方法的参数中。
* @param id
* @return
*/
@RequestMapping("/testPathVariable/{id}")
public String testPathVariable(@PathVariable("id") Integer id){
System.out.println("testPathVariable: "+ id);
return SUCCESS;
}
@RequestMapping("/testAntPath/*/abc")
public String testAndPath(){
System.out.println("testAntPath");
return SUCCESS;
}
/**
* 了解：可以使用params和 headers来更加精确的映射请求，params 和 headers支持简单的表达式
* @return
*/
@RequestMapping(value="testParamsAndHeaders",
params={"username","age!=10"}, headers={"Accept-Language=en-US,zh;q=0.8"})
public String testParamsAndHeaders(){
System.out.println("testParamsAndHeaders");
return SUCCESS;
}
/**
* 常用：使用method 属性来指定请求方式
* @return
*/
@RequestMapping(value="/testMethod",method=RequestMethod.POST)
public String testMethod(){
System.err.println("testMethod");
return SUCCESS;
}
/**
* 1.@RequestMapping 除了修饰方法，还可来修饰类
* 2.
* 1）.类定义处：提供初步的请求映射信息，相对于web应用的根目录
* 2）.方法处：提供进一步的细分映射信息。
* 相对于类定义处的url。若类定义处未标注@RequestMapping。则方法处标记的url相对于web应用的根目录。
* @return
*/
@RequestMapping("/testRequestMapping")
public String testRequestMapping(){
System.out.println("testRequestMapping");
return SUCCESS;
}
}
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>Insert title here</title>
</head>
<body>
<a href="springmvc/testCookieValue">Test CookieValue</a>
<br><br>
<a href="springmvc/testRequestHeader">Test RequestHeader</a>
<br><br>
<a href="springmvc/testRequestParam?username=wxh&age=11">Test RequestParam</a>
<br><br>
<!--put请求-->
<form action="springmvc/testRest/1" method="post">
<input type="hidden" name="_method" value="PUT">
<input type="submit" value="TestRest PUT">
</form>
<br><br>
<!--delete请求-->
<form action="springmvc/testRest/1" method="post">
<input type="hidden" name="_method" value="DELETE">
<input type="submit" value="TestRest DELETE">
</form>
<br><br>
<!-- post请求 -->
<form action="springmvc/testRest" method="post">
<input type="submit" value="TestRest POST">
</form>
<br><br>
<!-- get请求 -->
<a href="springmvc/testRest/1">Test Rest Get</a>
<br><br>
<a href="springmvc/testPathVariable/1">Test PathVariable</a>
<br><br>
<a href="springmvc/testAntPath/aa/abc">Test AntPath</a>
<br><br>
<a href="springmvc/testParamsAndHeaders?username=wxh&age=10">Test TestParamsAndHeaders</a>
<br><br>
<!--post请求-->
<form action="springmvc/testMethod" method="post">
<input type="submit" value="submit">
</form>
<!-- get请求 -->
<br><br>
<a href="springmvc/testMethod">Test Method</a>
<br><br>
<a href="springmvc/testRequestMapping">Test RequestMapping</a>
<br><br>
<a href="helloworld">Hello world</a>
</body>
</html>
