《Java Spring框架》Spring Http发送和接收案例
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内容图文
以下案例基于：Spring 3.2x 版本。
用于测试的Action（controller）。
@RequestMapping(value = "getData.json") public @ResponseBody ServerResponse getData(HttpSession session, String flag){ String str; if(!StringUtils.isBlank(flag)){ str = "您传的是“"+flag+"”"; }else{ str = "您传的是空"; } returnnew ServerResponse(str); }
案例（get）：
import
org.springframework.http.converter.StringHttpMessageConverter;
import
org.springframework.web.client.RestTemplate;
import
org.springframework.web.util.UriComponents;
import
org.springframework.web.util.UriComponentsBuilder;
import
java.net.URI;
import
java.nio.charset.Charset;
import
java.util.HashMap;
import
java.util.Map;
public
class
HttpGetDemo {
static String URL = "http://XXX.XXX.XXX.XXX:XXXX/getData.json";
publicstaticvoid main(String[] args) {
//get请求案例。 getRequest();
}
publicstaticvoid getRequest(){
RestTemplate restTemplate = HttpGetDemo.getInstance("utf-8");
StringBuilder result = new StringBuilder();
result.append(restTemplate.getForEntity(URL, String.class).getBody());
System.out.println(result);
System.out.println("--------------------------------------------------------------");
//方式二
result = new StringBuilder();
result.append(restTemplate.getForEntity(URL+"?flag={1}", String.class, "方法2").getBody());
System.out.println(result);
System.out.println("--------------------------------------------------------------");
//方式三
result = new StringBuilder();
Map<String, String> params = new HashMap<String, String>();
params.put("flag", "方法3");
result.append(restTemplate.getForEntity(URL+"?flag={flag}", String.class, params).getBody());
System.out.println(result);
System.out.println("--------------------------------------------------------------");
//方式四
result = new StringBuilder();
UriComponents uriComponents = UriComponentsBuilder.fromUriString(
URL+"?flag={flag}")
.build()
.expand("方法4")
.encode();
URI uri = uriComponents.toUri();
result.append(restTemplate.getForEntity(uri, String.class).getBody());
System.out.println(result);
}
publicstatic RestTemplate getInstance(String charset) {
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(1,new StringHttpMessageConverter(Charset.forName(charset)));
return restTemplate;
}
}
运行结果：
用于测试的Action（controller）。
@RequestMapping(value = "getData.json") public @ResponseBody ServerResponse getData(HttpSession session,@RequestBody People people){ returnnew ServerResponse(people); }
案例（post）：
public
class
ServerResponse {
String msg;
String code;
Boolean success;
People data;
public
String getMsg() {
return
msg;
}
public
void
setMsg(String msg) {
this.msg = msg;
}
public String getCode() {
return code;
}
publicvoid setCode(String code) {
this.code = code;
}
public Boolean getSuccess() {
return success;
}
publicvoid setSuccess(Boolean success) {
this.success = success;
}
public People getData() {
return data;
}
publicvoid setData(People data) {
this.data = data;
}
public String toString(){
return "姓名："+data.getName()+"，年龄："+data.getAge()+"。";
}
}
public
class
People {
private
String name;
private
String age;
public
String getName() {
return
name;
}
public
void
setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
publicvoid setAge(String age) {
this.age = age;
}
}
import
org.springframework.http.ResponseEntity;
import
org.springframework.http.converter.StringHttpMessageConverter;
import
org.springframework.web.client.RestTemplate;
import
java.nio.charset.Charset;
public
class
HttpPostDemo {
static String URL = "http://XXX.XXX.XXX.XXX:XXXX/getData.json";
publicstaticvoid main(String[] args) {
//post请求案例。 postRequest();
}
publicstaticvoid postRequest(){
RestTemplate restTemplate = HttpGetDemo.getInstance("utf-8");
People people = new People();
people.setAge("18");
people.setName("李磊");
ResponseEntity<ServerResponse> serverResponseEntity = restTemplate.postForEntity(URL, people,ServerResponse.class);
System.out.println(serverResponseEntity.getBody());
System.out.println("--------------------------------------------------------------");
//方式二
people = new People();
people.setAge("20");
people.setName("韩梅梅");
ServerResponse serverResponse = restTemplate.postForObject(URL, people, ServerResponse.class);
System.out.println(serverResponse);
}
publicstatic RestTemplate getInstance(String charset) {
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(1,new StringHttpMessageConverter(Charset.forName(charset)));
return restTemplate;
}
}
运行结果：
原文：https://www.cnblogs.com/jssj/p/11594549.html
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