spring mvc参数传递

1.使用HttpServletRequest request
2.使用字符串
public class UserController {
	@RequestMapping(value="/user/list.do")
	public String list(HttpServletRequest request,String passWord){
		String userName=request.getParameter("userName");
		System.out.println("listtttttttttttt");
		System.out.println("userName:"+userName);
		System.out.println("password:"+passWord);
		return "users/user-list";
	}


首页index.jsp
<form action="user/list.do" method="post">  
    userName:<input type="text" name="userName" />  
    passWord:<input type="text" name="passWord" />  
    <input type="submit" value="tijiao" />  
</form>  

3.使用默认参数
@Controller
//@RequestMapping("/user")
public class UserController {
	@RequestMapping(value="/user/list.do")
	public String list(@RequestParam(value="user",defaultValue="haoning")String userName,String passWord){

		System.out.println("userName:"+userName);
		System.out.println("password:"+passWord);
		return "users/user-list";
	}

}
//默认的userName为haoning,要给userName起个别名

4.传递对象参数
建一个存用户信息的类UserInfo.java
package zou.huiying;

public class UserInfo {
	private String userId;
	private String userName;
	private String userSex;
	public String getUserId() {
		return userId;
	}
	public void setUserId(String userId) {
		this.userId = userId;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getUserSex() {
		return userSex;
	}
	public void setUserSex(String userSex) {
		this.userSex = userSex;
	}
}


配置控制器
@RequestMapping(value="/user/list.do")
	public String add1(UserInfo user){
		System.out.println("user:"+user);
		System.out.println("userId:"+user.getUserId());
                System.out.println("userName:"+user.getUserName());
		System.out.println("userSex:"+user.getUserSex());
		return "users/user-list";
	}
//user是UserInfo的一个实例


传递信息的页面add1.jsp

<form action="user/list.do" method="post">  
    number:<input type="text" name="userId" />  
    userName:<input type="text" name="userName" />  
    userSex:<input type="text" name="userSex" />  
    <input type="submit" value="tijiao" />  
</form>  
<a href="user/list.do">listttt</a>
//注意传值的形式，表单name的属性和类的属性名字必须一致

5.一次传多个参数，首页使用复选框
<form>
math:<input type="checkbox" name="userXq" value="math"/>
chinese:<input type="checkbox" name="userXq" value="chinese"/>
englisher:<input type="checkbox" name="userXq" value="englisher"/>
<input type="submit" value="tijiao" />
</form>

在class UserInfo中添加一个属性
private String[] userXq;
public String aa;
生成其get与set方法
新加方法（在控制器内调用）
public String toString(){
aa=Arrays.toString(userXq);
System.out.println(aa);
return aa;
}

控制器内
@RequestMapping(value="/user/list.do")
public String add1(UserInfo user){
System.out.println("user:"+user);
System.out.println("userId:"+user.getUserId());
System.out.println("userName:"+user.getUserName());
System.out.println("userSex:"+user.getUserSex());
System.out.println("userXq1:"+user.getUserXq());
System.out.println("userXq2:"+user.toString());
user.toString();
return "users/user-list";
//与传递单个参数区别不大