这篇文章主要介绍了SpringMVC中如何在路径变量里面写正则表达式，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
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/**
*
* 限制路径变量里面的值只能是数字
* http://localhost:8080/test/getUser/1
* http://localhost:8080/test/getUser/a
*/
@RequestMapping("/getUser/{id:\\d+}")
public User getUser(@PathVariable(name = "id") String userId) {
User user = new User();
user.setUsername(userId);
user.setPassword(userId);
return user;
}
public class User {
private String username;
/** * http://localhost:8080/test/getUser02/1
* http://localhost:8080/test/getUser02/a */@RequestMapping("/getUser02/{id}")
public User getUser02(@PathVariable(name = "id")
Integer userId)
{
User user = new User();
user.setUsername(String.valueOf(userId)); user.setPassword(String.valueOf(userId));
return user;} 
Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Sep 22 10:57:52 CST 2019
There was an unexpected error (type=Bad Request, status=400).
Failed to convert value of type 'java.lang.String' to required type 'java.lang.Integer'; nested exception is java.lang.NumberFormatException: For input string: "a"
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