本文内容由阿里云实名注册用户自发贡献，版权归原作者所有，阿里云开发者社区不拥有其著作权，亦不承担相应法律责任。具体规则请查看《 阿里云开发者社区用户服务协议 》和 《 阿里云开发者社区知识产权保护指引 》。如果您发现本社区中有涉嫌抄袭的内容，填写 侵权投诉表单 进行举报，一经查实，本社区将立刻删除涉嫌侵权内容。 @GetMapping("/provideGet") public Map<String, String> provideGet(){ return myService.provideGet(); // 提供post接口 @PostMapping("/providePost") public Map<String, Object> providePost(@RequestParam("number") int number, @RequestParam("name") String name) { return myService.providePost(number, name); // 提供map参数的post接口 @PostMapping("/providePostByMap") public Map<String, Object> providePostByMap(@RequestParam Map<String, Object> map) { return myService.providePostByMap(map); // 调用get接口 @GetMapping("/useGet") public Map<String, Object> useGet() { return myService.useGet();

1.2 Service

@Service
@EnableScheduling
public class MyService {
    public Map<String, String> provideGet() {
        Map<String, String> res = new HashMap<>();
        res.put("number", "3");
        res.put("name", "张三get");
        System.out.println("provideGet res:" + res + "\n");
        return res;
    public Map<String, Object> providePost(int number, String name) {
        Map<String, Object> res = new HashMap<>();
        res.put("number", number);
        res.put("name", name);
        return res;
    public Map<String, Object> providePostByMap(Map<String, Object> map) {
        int number = map.get("number") == null ? 0 : Integer.parseInt((String) map.get("number"));
        String name = map.get("name") == null ? "" : (String) map.get("name");
        Map<String, Object> res = new HashMap<>();
        res.put("number", number);
        res.put("name", name);
        System.out.println("providePostByMap res:" + res + "\n");
        return res;
2 调用get/post接口
使用restTemplate调用get/post接口。
 
getForObject():返回值是HTTP协议的响应体
 
getForEntity():返回的是ResponseEntity，ResponseEntity是对HTTP响应的封装，除了包含响应体，还包含HTTP状态码、contentType、contentLength、Header等信息
2.1 Controller
@RestController
@RequestMapping("/homepage")
public class MyController {    
    @Autowired
    MyService myService;
    // 调用get接口
    @GetMapping("/useGet")
    public Map<String, Object> useGet() {
        return myService.useGet();
    // 调用get接口验证账号密码
    @GetMapping("/useGetByPsw")
    public Map<String, Object> useGetByPsw() {
        return myService.useGetByPsw();
    // 调用post接口
    @PostMapping("/usePost")
    public Map<String, Object> usePost() {
        return myService.usePost();
2.2 Service
@Service
@EnableScheduling
public class MyService {
    @Resource
    private RestTemplate restTemplate;
    String getURL = "http://localhost:8081/homepage/provideGet";
    String postURL = "http://localhost:8081/homepage/providePostByMap";
    public Map<String, Object> useGet() {
        // getForObject返回值是HTTP协议的响应体
        String strObject1 = restTemplate.getForObject(getURL, String.class); //无参
        JSONObject jsonObject1 = JSONObject.parseObject(strObject1);
        MultiValueMap<String, String> sendData = new LinkedMultiValueMap<>();
        sendData.add("number", "3");
        sendData.add("name", "张三post");
        String strObject2 = restTemplate.getForObject(getURL, String.class, sendData); // 带参
        JSONObject jsonObject2 = JSONObject.parseObject(strObject2);
        // getForEntity返回的是ResponseEntity，是对HTTP响应的封装
        ResponseEntity<ResponseResult> responseData = restTemplate.getForEntity(getURL, ResponseResult.class);
        Map<String, Object> returnData = new HashMap<>();
        returnData.put("StatusCode:", responseData.getStatusCode());
        returnData.put("Body:", responseData.getBody());
        System.out.println("useGet jsonObject1:" + jsonObject1 + "\n");
        System.out.println("useGet jsonObject2:" + jsonObject2 + "\n");
        System.out.println("useGet responseData:" + responseData + "\n");
        System.out.println("useGet returnData:" + returnData + "\n");
        return returnData;
    public Map<String, Object> useGetByPsw() {
        RestTemplateBuilder builder = new RestTemplateBuilder();
        RestTemplate restTemplate = builder.basicAuthentication("username", "password").build();
        // getForEntity返回的是ResponseEntity，是对HTTP响应的封装
        ResponseEntity<ResponseResult> responseData = restTemplate.getForEntity(getURL, ResponseResult.class);
        Map<String, Object> returnData = new HashMap<>();
        returnData.put("StatusCode:", responseData.getStatusCode());
        returnData.put("Body:", responseData.getBody());
        System.out.println("useGetByPsw returnData:" + responseData + "\n");
        System.out.println("useGetByPsw returnData:" + returnData + "\n");
        return returnData;
    public Map<String, Object> usePost() {
        //RestTemplate在postForObject时，用MultiValueMap，不可使用HashMap。
        MultiValueMap<String, String> sendData = new LinkedMultiValueMap<>();
        sendData.add("number", "3");
        sendData.add("name", "张三post");
        // getForObject返回值是HTTP协议的响应体
        String strObject = restTemplate.postForObject(postURL, sendData, String.class);
        JSONObject jsonObject = JSONObject.parseObject(strObject);
        // getForEntity返回的是ResponseEntity，是对HTTP响应的封装
        ResponseEntity<ResponseResult> responseData = restTemplate.postForEntity(postURL, sendData, ResponseResult.class);
        Map<String, Object> returnData = new HashMap<>();
        returnData.put("StatusCode:", responseData.getStatusCode());
        returnData.put("Body:", responseData.getBody());
        System.out.println("usePost jsonObject:" + jsonObject + "\n");
        System.out.println("usePost responseData:" + responseData + "\n");
        System.out.println("usePost returnData:" + returnData + "\n");
        return returnData;
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