1 修饰类和方法
package site.exciter.springmvc.handlers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@RequestMapping("/springmvc")
@Controller
public class SpringMVCTest {
@RequestMapping("/testRequestMapping")
public String testRequestMapping() {
System.out.println("testRequestMapping");
return "success";
}
}
2 value
@RequestMapping("/springmvc")可以改为@RequestMapping(value = "springmvc")
3 method
post请求
controller
@RequestMapping(value = "testMethod", method = RequestMethod.POST)
public String testMethod() {
System.out.println("testMethod");
return "success";
}
jsp
<form action="/springmvc/testMethod" method="post">
<input type="submit" value="submit">
</form>
4 params和headers
@RequestMapping(value = "testPramsAndHeaders",
params = {"username", "age!=10"}, headers = {})
public String testPramsAndHeaders() {
System.out.println("testPramsAndHeaders");
return "success";
}
<a href="/springmvc/testPramsAndHeaders?username=exciter&age=10" rel="external nofollow" >testPramsAndHeaders</a>
当age=10时，访问会出错；当age为其他值时，正常访问。
http://localhost:8080/springmvc/testPramsAndHeaders?username=exciter&age=10
5 Ant路径
@RequestMapping("/testAntPath
@RequestMapping("/testPathVariable/{id}")
public String testPathVariable(@PathVariable("id") Integer id) {
System.out.println("testPathVariable:" + id);
return "success";
}
<a href="/springmvc/testPathVariable/1" rel="external nofollow" >testPathVariable</a>
6 HiddenHttpMethodFilter
HiddenHttpMethodFilter：浏览器 form 表单只支持 GET、POST、HEAD 请求，而DELETE、PUT 等 method 并不支 持，Spring3.0 添加了一个过滤器，可以将这些请求转换为标准的 http 方法，使得支持 GET、POST、PUT 与DELETE 请求。
web.xml中配置HiddenHttpMethodFilter
<!-- 配置org.springframework.web.filter.HiddenHttpMethodFilter,可以把 POST 请求转为 DELETE 或 PUT 请求 -->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>
@RequestMapping(value = "/testRest/{id}", method = RequestMethod.DELETE)
public String testRestDelete(@PathVariable Integer id) {
System.out.println("testRestDelete:" + id);
return "success";
}<a href="/springmvc/testRest/1" rel="external nofollow" >
<button>TestRest GET</button>
</a>
<form action="/springmvc/testRest" method="post">
<input type="submit" value="TestRest POST">
</form>
<form action="/springmvc/testRest/1" method="post">
<input type="hidden" name="_method" value="PUT">
<input type="submit" value="TestRest PUT">
</form>
<form action="/springmvc/testRest/1" method="post">
<input type="hidden" name="_method" value="DELETE">
<input type="submit" value="TestRest DELETE">
</form>
注意： 在Tomcat8.0以上请求完接口之后返回页会报错：
HTTP状态 405 - 方法不允许
类型 状态报告消息 JSP 只允许 GET、POST 或 HEAD。Jasper 还允许 OPTIONS
描述 请求行中接收的方法由源服务器知道，但目标资源不支持
临时解决方案：在返回的jsp中添加isErrorPage="true"：
<%@ page contentType="text/html;charset=UTF-8" language="java" isErrorPage="true" %>
7 @RequestParam
@RequestMapping("/testRequestParam")
public String testRequestParam(@RequestParam(value = "username") String username,
@RequestParam(value = "age", required = false, defaultValue = "0") int age) {
System.out.println("testRequestParam: username=" + username + " age=" + age);
return "success";
}
<a href="/springmvc/testRequestParam?username=exciter&age=20" rel="external nofollow" rel="external nofollow" >testRequestParam</a>
8 @RequestHeader
@RequestMapping("/testRequestHeader")
public String testRequestHeader(@RequestHeader(value = "Accept-Language") String al) {
System.out.println("testRequestHeader:" + al);
return "success";
}
<a href="/springmvc/testRequestParam?username=exciter&age=20" rel="external nofollow" rel="external nofollow" >testRequestParam</a>
9 @CookieValue
@RequestMapping("/testCookieValue")
public String testCookieValue(@CookieValue(value = "JSESSIONID") String sessionId) {
System.out.println("testCookieValue:" + sessionId);
return "success";
}总结
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