之前,我使用POSTMAN工具提交GET / PUT / POST / DELETE但是现在我正在尝试在不使用任何REST API客户端的情况下实现POST操作。为此,我提到了this website。我创建了一个Maven项目,这些是我的示例代码:
veb.hml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>RESTEasyJSONExample</display-name>
<servlet-mapping>
<servlet-name>resteasy-servlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
<!-- Auto scan REST service -->
<context-param>
<param-name>resteasy.scan</param-name>
<param-value>true</param-value>
</context-param>
<!-- this should be the same URL pattern as the servlet-mapping property -->
<context-param>
<param-name>resteasy.servlet.mapping.prefix</param-name>
<param-value>/rest</param-value>
</context-param>
<listener>
<listener-class>
org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
</listener-class>
</listener>
<servlet>
<servlet-name>resteasy-servlet</servlet-name>
<servlet-class>
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
</servlet-class>
</servlet>
pom.hml
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.java.resteasy</groupId>
<artifactId>RESTEasyJSONExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<repositories>
<repository>
<id>JBoss repository</id>
<url>https://repository.jboss.org/nexus/content/groups/public-jboss/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>3.0.4.Final</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jackson-provider</artifactId>
<version>3.0.4.Final</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
<version>3.0.4.Final</version>
</dependency>
</dependencies>
要表示为JSON的Java类
(student.Java)
package org.jboss.resteasy;
public class Student {
private int id;
private String firstName;
private String lastName;
private int age;
// No-argument constructor
public Student() {
}
public Student(String fname, String lname, int age, int id) {
this.firstName = fname;
this.lastName = lname;
this.age = age;
this.id = id;
}
//getters and settters
@Override
public String toString() {
return new StringBuffer(" First Name : ").append(this.firstName)
.append(" Last Name : ").append(this.lastName)
.append(" Age : ").append(this.age).append(" ID : ")
.append(this.id).toString();
}
}
REST服务生成和使用JSON输出
rest easy JSON services.Java
package org.jboss.resteasy;
//import everything here
@Path("/jsonresponse")
public class RestEasyJSONServices {
@GET
@Path("/print/{name}")
@Produces("application/json")
public Student produceJSON( @PathParam("name") String name ) {
Student st = new Student(name, "Marco",19,12);
return st;
}
@POST
@Path("/send")
@Consumes("application/json")
public Response consumeJSON(Student student) {
String output = student.toString();
return Response.status(200).entity(output).build();
}
}
rest easy client.Java
package org.jboss.resteasy.restclient;
//import everything here
public class RESTEasyClient {
public static void main(String[] args) {
Student st = new Student("Catain", "Hook", 10, 12);
try {
ResteasyClient client = new ResteasyClientBuilder().build();
ResteasyWebTarget target = client.target("http://localhost:8080/RESTEasyJSONExample/rest/jsonresponse/send");
Response response = target.request().post(Entity.entity(st, "application/json"));
if (response.getStatus() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatus());
}
System.out.println("Server response : \n");
System.out.println(response.readEntity(String.class));
response.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
现在,每当我使用GET url时,我都会得到输出:
http://localhost:8080/RESTEasyJSONExample/rest/jsonresponse/print/James
这基本上用于生成JSON,但当我使用POST网址是http://localhost:8080/RESTEasyJSONExample/rest/jsonresponse/send
时,我没有得到任何响应。我使用的是正确的网址吗?我哪里做错了?我的总体目的是使用JSON或XML实现POST方法,而不使用任何REST Client工具,如POSTMAN。
我已经使用Jersey客户发布请求。我能够发布XML数据。这应该适用于Json。请参考如何构建REST客户端:http://entityclass.in/rest/jerseyClientGetXml.htm
REST服务
@Path("/StudentService")
public class StudentService {
@POST
@Path("/update")
@Consumes(MediaType.APPLICATION_XML)
public Response consumeXML( Student student ) {
String output = student.toString();
return Response.status(200).entity(output).build();
}
}
现在REst Jersey客户:
public static void main(String[] args) {
try {
Student student = new Student();
student.setName("JON");
student.setAddress("Paris");
student.setId(5);
String resturl = "http://localhost:8080/RestJerseyClientXML/rest/StudentService/update";
Client client = Client.create();
WebResource webResource = client.resource(resturl);
ClientResponse response = webResource.accept("application/xml")
.post(ClientResponse.class, student);
String output = response.getEntity(String.class);
System.out.println("Server response : " + response.getStatus());
System.out.println();
System.out.println(output);
if (response.getStatus() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatus());
}
} catch (Exception e) {
}
}