本文演示環境為eclipse + Maven插件 + Jersey framework。本文只關注Jersey的使用，所以只使用類中定義的靜態數據做演示。請在使用時修改我的代碼。如果你的eclipse中沒有安裝 Maven插件，請關注我的博客，我馬上就會推出Maven+eclipse的開發教程。

1. 在eclipse中創建Maven項目

2.單擊"Next"

3. 選擇Maven項目類型為"maven-archetype-webapp"

4. 輸入項目相關的Maven設置

5. 分別創建src/main下java文件夾以及src下test文件夾

6. 設置src/main/java和src/test/java為source folder

7. 最終設置結果如下：

8. 修改pom.xml,添加Maven相應依賴庫

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

4.0.0

net.jianxi.tutorials.jerseyws

jerseywstest

war

1.0

jerseywstest Maven Webapp

http://maven.apache.org

junit

junit

4.7

test

com.sun.jersey

jersey-core

1.3

com.sun.jersey

jersey-server

1.3

com.sun.jersey

jersey-client

1.3

log4j

log4j

1.2.14

javax.ws.rs

jsr311-api

1.1.1

asm

asm

3.2

jerseywstest

maven-compiler-plugin

1.6

1.6

org.codehaus.mojo

tomcat-maven-plugin

target/jerseywstest.war

9. 添加基本POJO類Student:

1 package net.jianxi.tutorials.jerseyws.metadata;

2

3 ?import javax.xml.bind.annotation.XmlRootElement;

4

5 @XmlRootElement

6 ?public class Student {

7 private int id;

8 private String name;

9 private String dept;

10

11 public int getId() {

12 return id;

13 }

14

15 public Student() {

16 }

17

18 public Student(int id, String name, String dept) {

19 super();

20 this.id = id;

21 this.name = name;

22 this.dept = dept;

23 }

24 public void setId(int id) {

25 this.id = id;

26 }

27 public String getName() {

28 return name;

29 }

30 public void setName(String name) {

31 this.name = name;

32 }

33 public String getDept() {

34 return dept;

35 }

36 public void setDept(String dept) {

37 this.dept = dept;

38 }

39

40 }

41

10. 添加一個REST web服務實現類RestWsDemo:

1 package net.jianxi.tutorials.jerseyws;

2

3 ?import java.util.ArrayList;

4 ?import java.util.HashMap;

5 ?import java.util.List;

6 ?import java.util.Map;

7

8 ?import javax.ws.rs.DELETE;

9 ?import javax.ws.rs.FormParam;

10 ?import javax.ws.rs.GET;

11 ?import javax.ws.rs.POST;

12 ?import javax.ws.rs.PUT;

13 import javax.ws.rs.Path;

14 import javax.ws.rs.PathParam;

15 import javax.ws.rs.Produces;

16 import javax.ws.rs.QueryParam;

17 import javax.ws.rs.core.MediaType;

18

19 import net.jianxi.tutorials.jerseyws.metadata.Student;

20

21 import org.apache.log4j.Logger;

22

23

24 @Path("/students")

25 public class RestWsDemo {

26 private static Logger logger = Logger.getLogger(RestWsDemo.class);

27 private static int index = 1;

28 private static Map studentList = new HashMap();

29

30 public RestWsDemo() {

31 if(studentList.size()==0) {

32 studentList.put(index, new Student(index++, "Frank", "CS"));

33 studentList.put(index, new Student(index++, "Jersey", "Math"));

34 }

35 }

36

37 @GET

38 @Path("{studentid}")

39 @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})

40 public Student getMetadata(@PathParam("studentid") int studentid) {

41 if(studentList.containsKey(studentid))

42 return studentList.get(studentid);

43 else

44 return new Student(0, "Nil", "Nil");

45 }

46

47 @GET

48 @Path("list")

49 @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})

50 public List getAllStudents() {

51 List students = new ArrayList();

52 students.addAll(studentList.values());

53 return students;

54 }

55

56 @POST

57 @Path("add")

58 @Produces("text/plain")

59 public String addStudent(@FormParam("name") String name,

60 @FormParam("dept") String dept) {

61 studentList.put(index, new Student(index++, name, dept));

62 return String.valueOf(index-1);

63 }

64

65 @DELETE

66 @Path("delete/{studentid}")

67 @Produces("text/plain")

68 public String removeStudent(@PathParam("studentid") int studentid) {

69 logger.info("Receieving quest for deleting student: " + studentid);

70

71 Student removed = studentList.remove(studentid);

72 if(removed==null) return "failed!";

73 else return "true";

74 }

75

76 @PUT

77 @Path("put")

78 @Produces("text/plain")

79 public String putStudent(@QueryParam("studentid") int studentid,

80 @QueryParam("name") String name,

81 @QueryParam("dept") String dept

82 ) {

83 logger.info("Receieving quest for putting student: " + studentid);

84 if(!studentList.containsKey(studentid))

85 return "failed!";

86 else

87 studentList.put(studentid, new Student(studentid, name, dept));

88

89 return String.valueOf(studentid);

90 }

91 }

92

11. 修改src/main/webapp/WEB-INF/web.xml文件如下：

/p>

"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd" >

Archetype Created Web Application

jerseyws

com.sun.jersey.spi.container.servlet.ServletContainer

com.sun.jersey.config.property.resourceConfigClass

com.sun.jersey.api.core.PackagesResourceConfig

com.sun.jersey.config.property.packages

net.jianxi.tutorials.jerseyws

1

jerseyws

/rest/*

12. 運行Maven package任務，構建war文件，部署war應用到你的Web服務器。

13. 測試

我馬上就會推出如何用SoapUI工具測試Jersey Web服務的教程。這里這介紹簡單的測試方法。

13.1) 對于GET，可以直接通過瀏覽器進行測試，在瀏覽器中直接輸入：http://localhost:8080/jerseywstest/rest/students/list， 你應該看到返回的XML數據：

CS

1

Frank

Math

2

Jersey

輸入：http://localhost:8080/jerseywstest/rest/students/1則會返回一個學生的信息。

13.2) 測試POST方法。

添加一個testpost.htm文件

Insert title here

提交后你在用list方法就可以看到數據的變化。

13.3) PUT和DELETE方法的測試

添加一個Junit測試類

1 package net.jianxi.tutorials.jerseyws;

2

3

4 ?import javax.ws.rs.core.MultivaluedMap;

5

6 ?import org.junit.Before;

7 ?import org.junit.BeforeClass;

8 ?import org.junit.Test;

9

10 ?import com.sun.jersey.api.client.Client;

11 ?import com.sun.jersey.api.client.ClientResponse;

12 ?import com.sun.jersey.api.client.WebResource;

13 ?import com.sun.jersey.core.util.MultivaluedMapImpl;

14

15 ?public class RestWsDemoTest {

16 private String url = "http://localhost:8080/jerseywstest/rest/students";

17

18 @Test

19 public void testDelete() {

20 Client client = Client.create();

21 WebResource webResource = client.resource(url + "/delete/1");

22 ClientResponse response = webResource.delete(ClientResponse.class);

23

24 System.out.println("Response for delete request: " + response.getStatus());

25 }

26

27 @Test

28 public void testPut() {

29 Client client = Client.create();

30 WebResource webResource = client.resource(url + "/put");

31 MultivaluedMap queryParams = new MultivaluedMapImpl();

32 queryParams.add("studentid", "2");

33 queryParams.add("name", "nametest");

34 queryParams.add("dept", "depttest");

35 ClientResponse response = webResource.queryParams(queryParams).put(ClientResponse.class, "foo:test");

36 System.out.println("Response for put request: " + response.getStatus());

37 }

38 }

39

總結

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