mongodb使用
mongodb使用
1. 下载 mongo-2.6.3.jar
2. 新建 java项目
3. 按Spring方式封装查询 直接上代码



Java代码 
1.package com.mytest;  
2. 
3.import java.net.UnknownHostException;  
4. 
5.import com.mongodb.DB;  
6.import com.mongodb.DBCollection;  
7.import com.mongodb.Mongo;  
8.import com.mongodb.MongoException;  
9. 
10./** 
11. *  
12. *  
13. * @author lw 
14. * @created 2011-6-27 下午04:26:40 
15. * @version 1.0.0 
16. * @date 2011-6-27 下午04:26:40 
17. */ 
18. 
19.public class DBTemplate {  
20.    private static String MONGODB_SERVER = "192.168.42.212";  
21.    private static int SERVER_PORT = 27017;  
22.    private static String MONGODB_DBNAME = "test";  
23. 
24.    public final Object execute(MsgCallback action, String collection) {  
25.        DB db = getConn();  
26.        DBCollection dbColl = db.getCollection(collection);  
27.        Object result = action.doExecute(dbColl);  
28.        closeDb(db);  
29.        closeCollection(dbColl);  
30. 
31.        return result;  
32.    }  
33. 
34.    private DB getConn() {  
35.        return getConn(MONGODB_SERVER, SERVER_PORT, MONGODB_DBNAME);  
36.    }  
37. 
38.    private DB getConn(String server, int port, String dbName) {  
39.        Mongo m = null;  
40.        try {  
41.            m = new Mongo(server, port);  
42.        } catch (UnknownHostException e) {  
43.            e.printStackTrace();  
44.        } catch (MongoException e) {  
45.            e.printStackTrace();  
46.        }  
47.        return m.getDB(dbName);  
48.    }  
49. 
50.    private void closeDb(DB db) {  
51.        if (db != null) {  
52.            db = null;  
53.        }  
54.    }  
55. 
56.    private void closeCollection(DBCollection col) {  
57.        if (col != null) {  
58.            col = null;  
59.        }  
60.    }  
61.} 
package com.mytest;

import java.net.UnknownHostException;

import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.Mongo;
import com