带有参数的RestTemplate GET和Spring引导控制器

import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

public class Example {
    public static void main(String[] args) {
        RestTemplate restTemplate = new RestTemplate();
        
        // 1. 在URL中直接添加参数
        String url1 = "http://example.com/api/user?name=test&age=20";
        ResponseEntity<String> response1 = restTemplate.getForEntity(url1, String.class);
        System.out.println(response1.getBody());
        
        // 2. 使用URI变量
        String url2 = "http://example.com/api/user/{id}";
        ResponseEntity<String> response2 = restTemplate.getForEntity(url2, String.class, 1);
        System.out.println(response2.getBody());
    }
}

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
    @GetMapping("/api/user")
    public String getUser(@RequestParam String name, @RequestParam int age) {
        // 处理获取用户信息的逻辑
        return "User: " + name + ", Age: " + age;
    }
    
    @GetMapping("/api/user/{id}")
    public String getUserById(@PathVariable int id) {
        // 处理获取用户信息的逻辑
        return "User ID: " + id;
    }
}