SpringMVC学习笔记[email protected]

@RequestMapping修饰类

@RequestMapping("/springmvc")//此路径是相对于web应用根目录的路径
@Controller
public class SpringMVCTest {
 
    private static final String SUCCESS = "success";
     
    /**
     * @RequestMapping 除了修饰方法还可以修饰类
     * 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
     * 方法处：提供进一步的细分映射信息
     * @return
     */
    //此时请求应写为http://localhost:8080/SpringMVC/springmvc/testRequestMapping
    @RequestMapping("/testRequestMapping")//此路径是相对于类上面注解的路径
    public String testRequestMapping() {
        System.out.println("testRequestMapping");
        return SUCCESS;

/**
	 * 使用method来指定请求方式
	 * @return
	 */
	//此时通过http://localhost:8080/SpringMVC/springmvc/testMethod请求无效，必须为POST请求才响应
	@RequestMapping(value="/testMethod", method=RequestMethod.POST)
	public String testMethod() {
		System.out.println("testMethod");
		return SUCCESS;
	}

//http://localhost:8080/SpringMVC/springmvc/testParamsAndHeaders?username=admin&age=10 这种方式HTTP Status 404
	//http://localhost:8080/SpringMVC/springmvc/testParamsAndHeaders?username=admin&age=11 这种方式可以访问
	@RequestMapping(value="testParamsAndHeaders", params={"username", "age!=10"}, headers={"Accept-Language=zh-CN,zh;q=0.8"})
	public String testParamsAndHeaders() {

		return SUCCESS;
	}

	//http://localhost:8080/SpringMVC/springmvc/testAntPath/aa/abc
	//@RequestMapping("/testAntPath/*/abc")//*表示任意字符

	//http://localhost:8080/SpringMVC/springmvc/testAntPath/a/abc
    //@RequestMapping("/testAntPath/?/abc")//?表示任意一个字符

	//http://localhost:8080/SpringMVC/springmvc/testAntPath/a/45/abc
	@RequestMapping("/testAntPath/**/abc")//**表示匹配多层路径
	public String testAntPath() {
		System.out.println("testAntPath");
		return SUCCESS;
	}

	/**
	 * @PathVariable映射URL中的占位符到目标方法的参数中
	 * @param id
	 * @return
	 */
	//http://localhost:8080/SpringMVC/springmvc/testPathVariable/45
	@RequestMapping("/testPathVariable/{id}")
	public String testPathVariable(@PathVariable("id") Integer id){
		System.out.println("testPathVariable:" + id);
		return SUCCESS;
	}