如果想透彻了解什么是REST,这里有Roy Fielding博士最原始的文档：http://yun.baidu.com/share/link?shareid=3150451374&uk=170352852；
这里还有一篇结合WCF来讲述REST的好文章：http://www.cnblogs.com/simonchen/articles/2220838.html （转）
首先来个流程图，便于理解整个功能实现
1.JAVA客户端：
1.1 主函数文件
Invoker.java
1 package superman.jackson.qianzhilan;
2 import org.json.JSONObject;
3 import entity.jackson.qianzhilan.Student;
4
5 public class Invoker {
6
7 /* the address of services */
8 private static String HOST="http://your ip address";
9 private static String BAREHOST="your ip address";
10 private static String SERVICE_ADD="/wcf/MyService.svc/stuRegister";
11 private static String SERVICE_SELECT="/wcf/MyService.svc/SelStuInfo";
12 private static String SERVICE_UPDATE="/wcf/MyService.svc/updStudent";
13 private static String SERVICE_DELETE="/wcf/MyService.svc/delStudent";
14
15 public static void main(String args[])
16 {
17 String result="";
18 WebClient client=new WebClient();
19 JSONObject json = new JSONObject();
20
21 /**
22 * HttpClient Post method
23 *
24 */
25 try {
26
27 Student stu = new Student();
28 stu.setS_id(90018);
29 stu.setSname("90018");
30 stu.setBirthplace("");
31 stu.setEducation("");
32 stu.setE_mail("");
33 stu.setId_card_no("");
34 stu.setPwd("");
35 stu.setSalary(0);
36 stu.setSex("");
37 stu.setWork_place("");
38
39 result = client.doInsert(HOST+SERVICE_ADD, stu,"application/json");
40
41 } catch (Exception e) {
42 // TODO Auto-generated catch block
43 e.printStackTrace();
44 }
45
46 /**
47 * HttpClient Select method
48 * input params:id
49 * out params:DataTable
50 */
51 try {
52 int s_id=90015;
53 String reString;
54 reString= client.doSelect(BAREHOST,SERVICE_SELECT,s_id);
55
56 if(reString==null)
57 System.err.println("select failure!");
58
59 } catch (Exception e) {
60 // TODO: handle exception
61 e.printStackTrace();
62 }
63
64
65
66 /**
67 * HttpClient Update method
68 *
69 */
70
71 try {
72
73 Student stu = new Student();
74 stu.setS_id(90015);
75 stu.setSname("90015");
76 stu.setBirthplace("山东省");
77 stu.setEducation("本科");
78 stu.setE_mail("");
79 stu.setId_card_no("");
80 stu.setPwd("");
81 stu.setSalary(10000);
82 stu.setSex("男");
83 stu.setWork_place("");
84
85 result = client.doUpdate(HOST+SERVICE_UPDATE, stu,"application/json");
86
87 } catch (Exception e) {
88 // TODO Auto-generated catch block
89 e.printStackTrace();
90 }
91
92 /**
93 * HttpClient Delete method
94 *
95 */
96
97 try {
98
99 json.put("s_id", 90012);
100
101 client.doDelete(BAREHOST,SERVICE_DELETE,"90012","application/json");
102
103
104 } catch (Exception e) {
105 // TODO Auto-generated catch block
106 e.printStackTrace();
107 }
108 }
109
110
111 }
1.2 调用函数实现文件
WebClient.java
1 package superman.jackson.qianzhilan;
2
3 import java.io.IOException;
4 import java.net.HttpURLConnection;
5 import java.net.URI;
6
7 import org.apache.http.HttpResponse;
8 import org.apache.http.client.ClientProtocolException;
9 import org.apache.http.client.HttpClient;
10 import org.apache.http.client.methods.HttpDelete;
11 import org.apache.http.client.methods.HttpGet;
12
13 import org.apache.http.client.methods.HttpPost;
14 import org.apache.http.client.methods.HttpPut;
15 import org.apache.http.client.utils.URIBuilder;
16 import org.apache.http.entity.StringEntity;
17 import org.apache.http.impl.client.HttpClients;
18 import org.apache.http.util.EntityUtils;
19
20 import org.json.JSONStringer;
21
22
23 import com.fasterxml.jackson.databind.ObjectMapper;
24
25 import entity.jackson.qianzhilan.Student;
26
27 public class WebClient {
28
29 public WebClient() {
30
31 }
32
33 /**
34 * @param url
35 * @param Student
36 * @param contentType
37 * @return json string
38 */
39 public String doInsert(String url, Student stu, String contentType) {
40
41 String strResp = "";
42 HttpPut request = new HttpPut(url);
43 request.setHeader("Accept", contentType);
44 request.setHeader("Content-type", contentType);
45
46 /* method one:user org.json jar to generate the data of json format */
47 JSONStringer jStr;
48 /* method one:user jackson jars to generate the data of json format */
49 String jsonStr;
50 ObjectMapper mapper=new ObjectMapper();
51 try {
52
53 /* method one:user org.json jar to generate the data of json format */
54 // jStr = (JSONStringer)(new JSONStringer()
55 // .object().key("stu")
56 // .object()
57 // .key("s_id").value(stu.getS_id())
58 // .key("sname").value(stu.getSname())
59 // .key("sex").value(stu.getSex())
60 // .key("id_card_no").value(stu.getId_card_no())
61 // .key("education").value(stu.getEducation())
62 // .key("work_place").value(stu.getWork_place())
63 // .key("salary").value(stu.getSalary())
64 // .key("birthplace").value(stu.getBirthplace())
65 // .key("pwd").value(stu.getPwd())
66 // .key("e_mail").value(stu.getE_mail())
67 // .endObject()
68 // .endObject());
69
70 jsonStr=mapper.writeValueAsString(stu);
71 StringEntity entity = new StringEntity(jsonStr);
72 request.setEntity(entity);
73 System.out.printf("send the content:"+jsonStr+"\n");
74 // create the httpclient
75 HttpClient httpClient = HttpClients.createDefault();
76
77 // httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT,30000);
78 HttpResponse response = httpClient.execute(request);
79 // judge the response status
80 if (response.getStatusLine().getStatusCode() == HttpURLConnection.HTTP_OK)
81 {
82 String tmpString;
83 tmpString = EntityUtils.toString(response.getEntity());
84 System.out.println("the result:"+tmpString );
85 }
86
87 System.out.printf("server reply: "
88 +response.getEntity().getContent()+
89 response.getFirstHeader("Content-type")+
90 response.getStatusLine().toString()+"\n");
91 } catch (Exception e) {
92 // TODO Auto-generated catch block
93 e.printStackTrace();
94 }
95
96 // Reload plate numbers
97
98 return strResp;
99
100 }
101 public String doSelect(String host,String servUri,int s_id) throws Exception {
102
103 String strResp=null;
104 // JSONObject json = new JSONObject();
105 // json.put("s_id", s_id);
106 URI uri = new URIBuilder()
107 .setScheme("http")
108 .setHost(host)
109 .setPath(servUri)
110 .setParameter("s_id", String.valueOf(s_id))
111 .build();
112 HttpGet httpGet = new HttpGet(uri);
113 // StringEntity entity = new StringEntity(json.toString(),"UTF-8");
114 // entity.setContentType(contentType);
115
116 // httpGet.setEntity(entity);
117 HttpClient client2 = HttpClients.createDefault();
118 HttpResponse resp;
119 try {
120 resp = client2.execute(httpGet);
121
122 if (resp.getStatusLine().getStatusCode() == HttpURLConnection.HTTP_OK)
123 {
124 strResp = EntityUtils.toString(resp.getEntity());
125 System.out.println("the select result:"+strResp);
126
127 } else System.out.println("Error select Response:"
128 + resp.getStatusLine().toString());
129 } catch (ClientProtocolException e) {
130 // TODO Auto-generated catch block
131 e.printStackTrace();
132 } catch (IOException e) {
133 // TODO Auto-generated catch block
134 e.printStackTrace();
135 }
136
137 return strResp;
138 }
139 public String doUpdate(String url,Student stu,String contentType)
140 {
141
142 String tmpString=null;
143 HttpPost request=new HttpPost(url);
144 request.setHeader("Accept", contentType);
145 request.setHeader("Content-type", contentType);
146
147 ObjectMapper mapper=new ObjectMapper();
148 String jsonString;
149
150 try {
151 jsonString=mapper.writeValueAsString(stu);
152 StringEntity entity=new StringEntity(jsonString,"UTF-8");
153 request.setEntity(entity);
154
155 HttpClient client=HttpClients.createDefault();
156 HttpResponse response=client.execute(request);
157 // judge the response status
158 if (response.getStatusLine().getStatusCode() == HttpURLConnection.HTTP_OK)
159 {
160 tmpString= EntityUtils.toString(response.getEntity());
161 System.out.println("the update result:"+tmpString);
162 } else System.out.println("the update failure");
163 } catch (ClientProtocolException e) {
164 // TODO Auto-generated catch block
165 e.printStackTrace();
166 } catch (IOException e) {
167 // TODO Auto-generated catch block
168 e.printStackTrace();
169 }
170 return tmpString;
171 }
172
173 public String doDelete(String host,String servUri,String s_id,String contentType) throws Exception {
174 // JSONStringer jStr;
175 // jStr = (JSONStringer)(new JSONStringer()
176 // .object().key("s_id").value(90012)
177 // .endObject());
178 String tmpString=null;
179 // HttpPost request=new HttpPost(url);
180 // request.setHeader("Accept", contentType);
181 // request.setHeader("Content-type", contentType);
182 HttpDelete delete=new HttpDelete();
183 //
184 try {
185
186 // System.out.println(jStr.toString());
187 // StringEntity entity=new StringEntity(jStr.toString());
188 // entity.setContentType(contentType);
189 // request.setEntity(entity);
190 // /* method of delete */
191 URI uri = new URIBuilder()
192 .setScheme("http")
193 .setHost(host)
194 .setPath(servUri)
195 .setParameter("s_id",s_id)
196 .build();
197 delete.setURI(uri);
198 HttpClient client=HttpClients.createDefault();
199 HttpResponse response=client.execute(delete);
200 // judge the response status
201 if (response.getStatusLine().getStatusCode() == HttpURLConnection.HTTP_OK)
202 {
203 tmpString= EntityUtils.toString(response.getEntity());
204 System.out.println("the delete result:" + tmpString);
205 } else System.out.println("the delete failure"+response.getStatusLine().toString());
206 } catch (ClientProtocolException e) {
207 // TODO Auto-generated catch block
208 e.printStackTrace();
209 } catch (IOException e) {
210 // TODO Auto-generated catch block
211 e.printStackTrace();
212 }
213 return tmpString;
214 }
215
216 }
2.服务器端 [ Rest WCF ]
2.1 配置文件
Web.config
1 <?xml version="1.0" encoding="utf-8"?> 2 <configuration> 3 4 <appSettings> 5 <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" /> 6 </appSettings> 7 <system.web> 8 <compilation debug="true" targetFramework="4.5" /> 9 <httpRuntime targetFramework="4.5"/> 10 </system.web> 11 12 <system.serviceModel> 13 <behaviors> 14 <serviceBehaviors> 15 <behavior> 16 <!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false --> 17 <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/> 18 <!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息 --> 19 <serviceDebug includeExceptionDetailInFaults="true"/> 20 21 </behavior> 22 </serviceBehaviors> 23 <!--endpointBehaviors 下的名为json的bahavior使服务器端支持Http功能 --> 24 <endpointBehaviors> 25 <behavior name="json"> 26 <webHttp helpEnabled="true" /> 27 </behavior> 28 </endpointBehaviors> 29 </behaviors> 30 <protocolMapping> 31 <add binding="basicHttpsBinding" scheme="https" /> 32 </protocolMapping> 33 <!-- sevices下有两个子节点endpoint分别配置提供Http服务接口时和本地服务接口时所应具有的属性 --> 34 <services> 35 <service name="SuperWCF.MyService"> 36 <endpoint address="" binding="webHttpBinding" contract="SuperWCF.IHello" behaviorConfiguration="json"> 37 38 </endpoint> 39 40 <endpoint address="localhost" binding="basicHttpBinding" contract="SuperWCF.IHello" /> 41 </service> 42 </services> 43 44 <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> 45 46 </system.serviceModel> 47 <system.webServer> 48 <modules runAllManagedModulesForAllRequests="true"> 49 <!-- 50 若要在调试过程中浏览 Web 应用程序根目录，请将下面的值设置为 True。 51 在部署之前将该值设置为 False 可避免泄露 Web 应用程序文件夹信息。 52 注意：在IIS 7.5 中此处的remove和handlers一定要添加已允许客户端可以使用DELETE和PUT功能--> 53 <remove name="WebDAVModule" /> 54 </modules> 55 <handlers> 56 <remove name="WebDAV" /> 57 </handlers> 58 <directoryBrowse enabled="true"/> 59 </system.webServer> 60 61 </configuration>
2.2 接口文件
IHello.cs
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Runtime.Serialization;
5 using System.ServiceModel;
6 using System.ServiceModel.Web;
7 using System.Text;
8 using System.Data;
9 using Npgsql;
10 using NpgsqlTypes;
11
12 namespace SuperWCF
13 {
14 // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IService1”。
15 [DataContract]
16 public class Student
17 {
18 [DataMember(Name = "s_id")]
19 public int s_id { get; set; }
20 [DataMember(Name="sname")]
21 public string sname { get; set; }
22 [DataMember(Name="sex")]
23 public string sex { get; set; }
24 [DataMember(Name="id_card_no")]
25 public string id_card_no { get; set; }
26 [DataMember(Name = "education")]
27 public string education { get; set; }
28 [DataMember(Name = "work_place")]
29 public string work_place { get; set; }
30 [DataMember(Name = "salary")]
31 public int salary { get; set; }
32
33 [DataMember(Name = "birthplace")]
34 public string birthplace { get; set; }
35 [DataMember(Name = "pwd")]
36 public string pwd { get; set; }
37 [DataMember(Name = "e_mail")]
38 public string e_mail { get; set; }
39
40 };
41 [ServiceContract]
42 public interface IHello
43 {
44 // TODO: 在此添加您的服务操作
45 [OperationContract]
46 [WebInvoke(
47 Method="PUT",
48 BodyStyle = WebMessageBodyStyle.Bare,
49 ResponseFormat = WebMessageFormat.Json,
50 RequestFormat = WebMessageFormat.Json)]
51 String stuRegister(Student stu);
52
53 [OperationContract]
54 [WebInvoke(
55 Method="GET",
56 BodyStyle = WebMessageBodyStyle.Bare,
57 ResponseFormat = WebMessageFormat.Json)]
58 DataSet SelStuInfo(string s_id);
59
60 [OperationContract]
61 [WebInvoke(
62 Method = "POST",
63 BodyStyle = WebMessageBodyStyle.Bare,
64 ResponseFormat = WebMessageFormat.Json,
65 RequestFormat = WebMessageFormat.Json)]
66 int updStudent(Student stu);
67 [OperationContract]
68 [WebInvoke(
69 Method = "DELETE",
70 BodyStyle = WebMessageBodyStyle.Bare,
71 RequestFormat = WebMessageFormat.Json)]
72 int delStudent(string s_id);
73
74 }
75 }
2.3 服务接口实现
MyService.svc.cs
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Runtime.Serialization;
5 using System.ServiceModel;
6 using System.ServiceModel.Web;
7 using System.Text;
8 using System.Data;
9 using Npgsql;
10 using NpgsqlTypes;
11
12 namespace SuperWCF
13 {
14 // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、svc 和配置文件中的类名“Service1”。
15 // 注意: 为了启动 WCF 测试客户端以测试此服务，请在解决方案资源管理器中选择 Service1.svc 或 Service1.svc.cs，然后开始调试。
16
17
18 public class MyService : IHello
19 {
20 const string constr = "host=localhost;port=1991;uid=postgres;pwd=database password;database=database name;";
21 public String stuRegister(Student stu)
22 {
23 string sql = "insert into \"InfoSystem\".\"Student\"(s_id,sname, sex, id_card_no, education, work_place, salary,brithplace,pwd,email) values(@s_id,@sname,@sex,@id_card_no,@education,@work_place,@salary,@birthplace,md5(@pwd),@email)";
24
25 NpgsqlConnection mycon = new NpgsqlConnection(constr);
26 mycon.Open();
27 NpgsqlCommand myad = new NpgsqlCommand(sql, mycon);
28 myad.Parameters.Add("@s_id", NpgsqlDbType.Integer).Value = stu.s_id;
29 myad.Parameters.Add("@sname", NpgsqlDbType.Char, 20).Value = stu.sname;
30 myad.Parameters.Add("@sex", NpgsqlDbType.Char, 1).Value = stu.sex;
31 myad.Parameters.Add("@id_card_no", NpgsqlDbType.Char, 100).Value = stu.id_card_no;
32 myad.Parameters.Add("@education", NpgsqlDbType.Char, 10).Value = stu.education;
33 myad.Parameters.Add("@work_place", NpgsqlDbType.Char, 40).Value = stu.work_place;
34 myad.Parameters.Add("@salary", NpgsqlDbType.Integer).Value = stu.salary;
35 myad.Parameters.Add("@birthplace", NpgsqlDbType.Char, 50).Value = stu.birthplace;
36 myad.Parameters.Add("@pwd", NpgsqlDbType.Char, 100).Value = stu.pwd;
37 myad.Parameters.Add("@email", NpgsqlDbType.Char, 50).Value = stu.e_mail;
38
39 if (myad.ExecuteNonQuery() > 0)
40 {
41 mycon.Close();
42 return "true";
43
44 }
45 else
46 {
47 mycon.Close();
48 return "false";
49 }
50
51 }
52
53
54 public DataSet SelStuInfo(String s_id)
55 {
56 string sql = "select * from \"InfoSystem\".\"Student\" where [email protected]_id";
57 DataSet dt = new DataSet();
58
59 NpgsqlConnection mycon = new NpgsqlConnection(constr);
60
61 mycon.Open();
62 NpgsqlDataAdapter myad = new NpgsqlDataAdapter(sql, mycon);
63 myad.SelectCommand.Parameters.Add("@s_id", NpgsqlDbType.Integer).Value = s_id;
64 myad.Fill(dt);
65 return dt;
66 }
67 public int updStudent(Student stu)
68 {
69 string sql = "UPDATE \"InfoSystem\".\"Student\" SET [email protected],[email protected],[email protected]_card_no,[email protected],[email protected]_place,[email protected],[email protected],[email protected] where [email protected]_id";
70
71 NpgsqlConnection mycon = new NpgsqlConnection(constr);
72 mycon.Open();
73 NpgsqlCommand myad = new NpgsqlCommand(sql, mycon);
74
75 myad.Parameters.Add("@sname", NpgsqlDbType.Char, 20).Value = stu.sname;
76 myad.Parameters.Add("@sex", NpgsqlDbType.Char, 1).Value = stu.sex;
77 myad.Parameters.Add("@id_card_no", NpgsqlDbType.Char, 18).Value = stu.id_card_no;
78 myad.Parameters.Add("@education", NpgsqlDbType.Char, 10).Value = stu.education;
79 myad.Parameters.Add("@work_place", NpgsqlDbType.Char, 40).Value = stu.work_place;
80 myad.Parameters.Add("@salary", NpgsqlDbType.Integer).Value = stu.salary;
81 myad.Parameters.Add("@brithplace", NpgsqlDbType.Char, 50).Value = stu.birthplace;
82 myad.Parameters.Add("@email", NpgsqlDbType.Char, 50).Value = stu.e_mail;
83 myad.Parameters.Add("@s_id", NpgsqlDbType.Integer).Value = stu.s_id;
84
85 int res = myad.ExecuteNonQuery();
86 if (res > 0)
87 {
88 mycon.Close();
89 return 1;
90
91 }
92 else
93 {
94 mycon.Close();
95 return 0;
96 }
97 }
98 public int delStudent(string s_id)
99 {
100 string sql = "delete from \"InfoSystem\".\"Student\" where [email protected]_id";
101
102 NpgsqlConnection mycon = new NpgsqlConnection(constr);
103 mycon.Open();
104 NpgsqlCommand myad = new NpgsqlCommand(sql, mycon);
105 myad.Parameters.Add("@s_id", NpgsqlDbType.Integer).Value =Convert.ToInt32(s_id);
106 if (myad.ExecuteNonQuery() > 0)
107 {
108 mycon.Close();
109 return 1;
110
111 }
112 else
113 {
114 mycon.Close();
115 return 0;
116 }
117
118 }
119 }
120 }
有问题欢迎提问！
时间： 2024-10-13 20:45:03