RestTemplate简单使用
作者：互联网
RestTemplate来自import org.springframework.web.client.RestTemplate;
需要的maven依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
get无参调用
接口项目代码
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.1</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com</groupId> <artifactId>rest</artifactId> <version>0.0.1-SNAPSHOT</version> <name>rest</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
package com.rest;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class RestApplication {
public static void main(String[] args) {
SpringApplication.run(RestApplication.class, args);
}
}
/**
*
*/
package com.rest.controller.front;
import java.util.HashMap;
import java.util.Map;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author yourheart
* @update 2022年6月28日 下午11:08:02
* @description:
*/
@RestController
public class TestController {
@GetMapping("/testNoParamterGet")
public Map<String, Object> testNoParamterGet() {
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("name", "小白");
resultMap.put("age", "10");
resultMap.put("hobby", "羽毛球");
resultMap.put("address", "东晋");
return resultMap;
}
}
server.port=8001
logging.level.com.rest=debug
logging.level.web=debug
spring.devtools.add-properties=false
调用方代码
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.0</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.java</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
package com.java;
/**
* @author yourheart
* @Description
* @create 2022-06-20 21:14
*/
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.web.client.RestTemplate;
@SpringBootTest
public class DemoApplicationTests {
@Test
public void test(){
RestTemplate restTemplate=new RestTemplate();
String url="http://127.0.0.1:8001//testNoParamterGet";
String forObject = restTemplate.getForObject(url, String.class);
System.out.println(forObject);
}
}
server.port=2000 logging.level.com.java=debug logging.level.web=debug spring.devtools.add-properties=false
get有参调用
private final static Logger log = LoggerFactory.getLogger(TestController.class);
@GetMapping("/testParamterGet")
public Map<String, Object> testParamterGet(String param) {
log.info("【入参】param:{}", param);
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("name", "小红");
resultMap.put("age", "20");
resultMap.put("hobby", "网球");
resultMap.put("address", "唐朝");
return resultMap;
}
package com.java;
/**
* @author yourheart
* @Description
* @create 2022-06-20 21:14
*/
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.web.client.RestTemplate;
@SpringBootTest
public class DemoApplicationTests {
@Test
public void test(){
RestTemplate restTemplate=new RestTemplate();
String url="http://127.0.0.1:8001//testParamterGet?param={param}";
String forObject = restTemplate.getForObject(url, String.class,"aaa");
System.out.println(forObject);
}
}
get请求多个参数
@GetMapping("/testParamterMapGet/{id}/{name}")
public Map<String, Object> testParamterMapGet(@PathVariable String id, @PathVariable String name) {
log.info("【入参】id:{},name:{}", id, name);
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("name", "小红");
resultMap.put("age", "20");
resultMap.put("hobby", "网球");
resultMap.put("address", "唐朝");
return resultMap;
}
package com.java;
/**
* @author yourheart
* @Description
* @create 2022-06-20 21:14
*/
import com.java.bean.TestBean;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.web.client.RestTemplate;
import java.util.HashMap;
import java.util.Map;
@SpringBootTest
public class DemoApplicationTests {
@Test
public void test(){
RestTemplate restTemplate=new RestTemplate();
String url="http://127.0.0.1:8001//testParamterMapGet/{id}/{name}";
Map<String, String> params = new HashMap<String, String>();
params.put("id", "1");
params.put("name","admin");
String forObject = restTemplate.getForObject(url, String.class,params);
System.out.println(forObject);
}
}
post请求多个参数
@PostMapping("/testParamterBeanPost")
public Map<String, Object> testParamterBeanPost(@RequestBody TestBean param) {
log.info("【入参】param:{}", param);
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("name", "小红");
resultMap.put("age", "20");
resultMap.put("hobby", "网球");
resultMap.put("address", "唐朝");
return resultMap;
}
/**
*
*/
package com.rest.bean;
/**
* @author yourheart
* @update 2022年6月28日 下午11:56:52
* @description:
*/
public class TestBean {
private String user;
private String pwd;
/**
* @return the user
*/
public String getUser() {
return user;
}
/**
* @param user the user to set
*/
public void setUser(String user) {
this.user = user;
}
/**
* @return the pwd
*/
public String getPwd() {
return pwd;
}
/**
* @param pwd the pwd to set
*/
public void setPwd(String pwd) {
this.pwd = pwd;
}
@Override
public String toString() {
return "TestBean [user=" + user + ", pwd=" + pwd + "]";
}
}
package com.java;
/**
* @author yourheart
* @Description
* @create 2022-06-20 21:14
*/
import com.java.bean.TestBean;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.web.client.RestTemplate;
import java.util.HashMap;
import java.util.Map;
@SpringBootTest
public class DemoApplicationTests {
@Test
public void test() {
RestTemplate restTemplate = new RestTemplate();
String url = "http://127.0.0.1:8001/testParamterBeanPost";
TestBean testBean = new TestBean();
testBean.setUser("admin");
testBean.setPwd("123");
String postForObject = restTemplate.postForObject(url, testBean, String.class);
System.out.println(postForObject);
}
}
/**
*
*/
package com.java.bean;
/**
* @author yourheart
* @update 2022年6月28日 下午11:56:52
* @description:
*/
public class TestBean {
private String user;
private String pwd;
/**
* @return the user
*/
public String getUser() {
return user;
}
/**
* @param user the user to set
*/
public void setUser(String user) {
this.user = user;
}
/**
* @return the pwd
*/
public String getPwd() {
return pwd;
}
/**
* @param pwd the pwd to set
*/
public void setPwd(String pwd) {
this.pwd = pwd;
}
@Override
public String toString() {
return "TestBean [user=" + user + ", pwd=" + pwd + "]";
}
}
标签：String,boot,简单,RestTemplate,resultMap,使用,org,import,public 来源： https://www.cnblogs.com/q202105271618/p/16420280.html