最新版本(3.0.x)Resteasy中ClientResponse和GenericType应该用什么？
What should we use for ClientResponse and GenericType in latest version (3.0.x) Resteasy?
我正在开发Resteasy。我将应用程序的 Maven 依赖项从 2.2.x 迁移到 3.0.x，突然间我发现大多数 API 都已弃用。所以这个迁移对我的代码和测试用例有影响，因为它在我的整个代码中被弃用了。
我以我的测试用例为例：
较早版本的测试用例（在最新版本中已弃用，如 link 中所述：ClientRequestFactory RestEasy Deprecated... Any other RestEasy alternative ?）：
import org.jboss.resteasy.util.GenericType;
import org.jboss.resteasy.client.ClientRequest;
import org.jboss.resteasy.client.ClientResponse;
@Test
public void testGetStudent() throws Exception{
String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
ClientRequest request = new ClientRequest(str);
ClientResponse<List<Student>> response = request.get(new GenericType<List<Student>>(){});
List<Student> students = response.getEntity();
System.out.println("Size : "+students.size());
}
所以我重构了我的测试用例以使用
@Test
public void testGetStudents(){
final String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
Client client = ClientBuilder.newClient();
// Client client = ClientBuilder.newBuilder().build(); // This also works, OR
Response response = client.target(str).request().get();
// This will gives us whole XML output
String s = response.readEntity(String.class);
System.out.println(s);
**What is the replacement of below two lines in latest version? How I can get List of Student Object ?**
// ClientResponse<List<Student>> response = request.get(new GenericType<List<Student>>(){});
// List<Student> students = response.getEntity();
}
请指导。 最新版本下面两行的替换是什么？我如何获得学生对象列表？
Edit-1：我在下面尝试过，但出现以下错误：
Students.java
@XmlAccessorType(XmlAccessType.NONE)
@XmlRootElement(name = "students")
public class Students {
@XmlElement(name="student")
private ArrayList<Student> users;
public ArrayList<Student> getUsers() {
return users;
}
public void setUsers(ArrayList<Student> users) {
this.users = users;
}
}
但它给我错误：
@Test
public void testGetStudents(){
final String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
Client client = ClientBuilder.newClient();
// Client client = ClientBuilder.newBuilder().build(); // This also works, OR
Response response = client.target(str).request().get();
// This will gives us whole XML output
String stringOutput = response.readEntity(String.class);
System.out.println("STATUS : "+response.getStatus());
System.out.println(stringOutput);
Students students = response.readEntity(Students.class);
System.out.println("Size : "+students.getUsers().size());
}
java.lang.IllegalStateException: RESTEASY003765: Response is closed.
at org.jboss.resteasy.specimpl.BuiltResponse.abortIfClosed(BuiltResponse.java:256)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.abortIfClosed(ClientResponse.java:328)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readEntity(ClientResponse.java:152)
at org.jboss.resteasy.specimpl.BuiltResponse.readEntity(BuiltResponse.java:219)
at com.mkyong.rest.test.RestEasySampleTest.testGetStudents(RestEasySampleTest.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=14=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Resteasy Client-API 已经 marked deprecated 因为 JAX-RS 标准化了 Client-API。您现在可以使用等效的 javax.ws.rs 类:
javax.ws.rs.client.Client client = javax.ws.rs.client.ClientBuilder.newClient();
javax.ws.rs.client.WebTarget target = client.target("someUrl");
List<Student> students =
target.request().get(new javax.ws.rs.core.GenericType<List<Student>>() {});
这是一个带有查询参数和 HTTP 响应代码检查的示例，这对于快速失败和避免来自 JSON 映射器的堆栈跟踪非常方便，通常会隐藏真正的原因：
Response response = null;
try {
response = target.path("apiMethod")
.queryParam("stringParam", "test")
.queryParam("booleanParam", Boolean.FALSE)
.request().accept(MediaType.APPLICATION_JSON).get();
if (response.getStatus() == Response.Status.BAD_REQUEST.getStatusCode()) { // HTTP 400
throw new BadRequestException("invalid parameters!");
} else if (response.getStatus() ==
Response.Status.NOT_FOUND.getStatusCode()) { // HTTP 404
throw new NotFoundException("resource was not found on server!");
}
List<MyPojo> result = response.readEntity(new GenericType<List<MyPojo>>(){});
return result;
} finally {
if (response != null) {
response.close();
}
}
我正在开发Resteasy。我将应用程序的 Maven 依赖项从 2.2.x 迁移到 3.0.x，突然间我发现大多数 API 都已弃用。所以这个迁移对我的代码和测试用例有影响，因为它在我的整个代码中被弃用了。
我以我的测试用例为例： 较早版本的测试用例（在最新版本中已弃用，如 link 中所述：ClientRequestFactory RestEasy Deprecated... Any other RestEasy alternative ?）：
import org.jboss.resteasy.util.GenericType;
import org.jboss.resteasy.client.ClientRequest;
import org.jboss.resteasy.client.ClientResponse;
@Test
public void testGetStudent() throws Exception{
String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
ClientRequest request = new ClientRequest(str);
ClientResponse<List<Student>> response = request.get(new GenericType<List<Student>>(){});
List<Student> students = response.getEntity();
System.out.println("Size : "+students.size());
}
所以我重构了我的测试用例以使用
@Test
public void testGetStudents(){
final String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
Client client = ClientBuilder.newClient();
// Client client = ClientBuilder.newBuilder().build(); // This also works, OR
Response response = client.target(str).request().get();
// This will gives us whole XML output
String s = response.readEntity(String.class);
System.out.println(s);
**What is the replacement of below two lines in latest version? How I can get List of Student Object ?**
// ClientResponse<List<Student>> response = request.get(new GenericType<List<Student>>(){});
// List<Student> students = response.getEntity();
}
请指导。 最新版本下面两行的替换是什么？我如何获得学生对象列表？
Edit-1：我在下面尝试过，但出现以下错误： Students.java
@XmlAccessorType(XmlAccessType.NONE)
@XmlRootElement(name = "students")
public class Students {
@XmlElement(name="student")
private ArrayList<Student> users;
public ArrayList<Student> getUsers() {
return users;
}
public void setUsers(ArrayList<Student> users) {
this.users = users;
}
}
但它给我错误：
@Test
public void testGetStudents(){
final String str = "http://localhost:8080/RESTfulExample/rest/restwebservice/list";
Client client = ClientBuilder.newClient();
// Client client = ClientBuilder.newBuilder().build(); // This also works, OR
Response response = client.target(str).request().get();
// This will gives us whole XML output
String stringOutput = response.readEntity(String.class);
System.out.println("STATUS : "+response.getStatus());
System.out.println(stringOutput);
Students students = response.readEntity(Students.class);
System.out.println("Size : "+students.getUsers().size());
}
java.lang.IllegalStateException: RESTEASY003765: Response is closed.
at org.jboss.resteasy.specimpl.BuiltResponse.abortIfClosed(BuiltResponse.java:256)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.abortIfClosed(ClientResponse.java:328)
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readEntity(ClientResponse.java:152)
at org.jboss.resteasy.specimpl.BuiltResponse.readEntity(BuiltResponse.java:219)
at com.mkyong.rest.test.RestEasySampleTest.testGetStudents(RestEasySampleTest.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=14=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Resteasy Client-API 已经 marked deprecated 因为 JAX-RS 标准化了 Client-API。您现在可以使用等效的 javax.ws.rs 类:
javax.ws.rs.client.Client client = javax.ws.rs.client.ClientBuilder.newClient();
javax.ws.rs.client.WebTarget target = client.target("someUrl");
List<Student> students =
target.request().get(new javax.ws.rs.core.GenericType<List<Student>>() {});
这是一个带有查询参数和 HTTP 响应代码检查的示例，这对于快速失败和避免来自 JSON 映射器的堆栈跟踪非常方便，通常会隐藏真正的原因：
Response response = null;
try {
response = target.path("apiMethod")
.queryParam("stringParam", "test")
.queryParam("booleanParam", Boolean.FALSE)
.request().accept(MediaType.APPLICATION_JSON).get();
if (response.getStatus() == Response.Status.BAD_REQUEST.getStatusCode()) { // HTTP 400
throw new BadRequestException("invalid parameters!");
} else if (response.getStatus() ==
Response.Status.NOT_FOUND.getStatusCode()) { // HTTP 404
throw new NotFoundException("resource was not found on server!");
}
List<MyPojo> result = response.readEntity(new GenericType<List<MyPojo>>(){});
return result;
} finally {
if (response != null) {
response.close();
}
}