一、映射URL绑定的占位符到方法参数
1.方法
使用@PathVariable注解
2.代码示例
a.接收请求方法
@RequestMapping(value = "/deleteInfo/{id}")
public String deleteInfo(@PathVariable("id") int shopCartId) {
return "删除成功";
}
b.发出请求
<a href="../shopCart/deleteInfo/1"></a>
二、绑定请求中的参数到方法参数
1.方法
使用@RequestParam注解
2.代码示例
a.接收请求方法
@RequestMapping(value = "/changeAmount")
public String changeAmount(@RequestParam(value = "amount") String amount,
@RequestParam(value = "shopCartId") String shopCartId) {
return "修改成功";
}
b.发出请求
<a href="../shopCart/changeAmount?amount=3&shopCartId=10"></a>
三、绑定表单对象到方法参数(实例对象)
1.方法
创建表单发送请求
2.代码示例
a.接收请求方法
@RequestMapping("/saveInfo")
public String saveInfo(Book book){
return "保存成功";
}
b.发出请求
<form action="../shopCart/saveInfo" method="post">
BookName:<input type="text" name="bookName"><br>
BookId:<input type="password" name="bookId"><br>
sellerId:<input type="text" name="seller.sellerId"><br>
sellerName:<input type="text" name="seller.sellerName"><br>
<input type="submit" value="提交">
</form>
c.Book.java
public class Book{
private int bookId;
private String bookName;
private Seller seller;
// 省略getter和setter方法
}
d.Seller.java
public class Seller{
private int sellerId;
private String sellerName;
// 省略getter和setter方法
}
四、绑定表单对象到方法参数(Map对象)
1.方法
创建表单发送请求
2.代码示例
a.接收请求方法
@RequestMapping("/getUser")
public String getUser(UserMap uMap) {
Set set=uMap.getuMap().keySet();
Iterator iterator=set.iterator();
while(iterator.hasNext()) {
Object keyName=iterator.next();
User u=uMap.getuMap().get(keyName);
System.out.println(u);
}
return "success";
}
b.发出请求
<form action="../user/getUser" method="post">
loginName1:<input type="text" name="uMap['u1'].loginName"><br>
loginPwd1:<input type="password" name="uMap['u1'].loginPwd"><br>
province1:<input type="text" name="uMap['u1'].address.province"><br>
city1:<input type="text" name="uMap['u1'].address.city"><br>
loginName2:<input type="text" name="uMap['u2'].loginName"><br>
loginPwd2:<input type="password" name="uMap['u2'].loginPwd"><br>
province2:<input type="text" name="uMap['u2'].address.province"><br>
city2:<input type="text" name="uMap['u2'].address.city"><br>
<input type="submit" value="提交">
</form>
c.UserMap.java
public class UserMap {
private Map<String, User> uMap; public Map<String, User> getuMap() {
return uMap;
} public void setuMap(Map<String, User> uMap) {
this.uMap = uMap;
}
}