MongoDB框架Jongo的使用

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一、什么是Jongo

jongo的主要作用是在java程序中使用mongo shell命令

二、jongo的使用

1、需要的包有

（1） bson4jackson-2.2.3.jar

（2）jackson-annotations-2.3.3.jar

（3）jackson-core-2.3.3.jar

（4）jackson-databind-2.2.3.jar

（5）jongo-1.0.jar

（6）mongo-java-driver-2.10.1.jar

jongo依赖jackson和bson4jackson两个包

2、使用

package testjson;import java.net.UnknownHostException;import org.jongo.FindOne;import org.jongo.Jongo;import org.jongo.MongoCollection;import org.junit.Before;import org.junit.Test;import com.mongodb.DB;import com.mongodb.MongoClient;import entity.Student;/** * @author Administrator *测试使用jongo */public class TestJongo {Jongo jongo = null;MongoCollection col = null;@Beforepublic void beforeTest(){DB db;try {db = new MongoClient().getDB("mydata");jongo = new Jongo(db);col = jongo.getCollection("mytest");} catch (UnknownHostException e) {// TODO Auto-generated catch blocke.printStackTrace();}}//查找@Testpublic void testJongoRead(){Iterable<Student> iterables = col.find("{name:'zhangsan'}").as(Student.class);for(Student stu:iterables){System.out.println(stu);}Student one = col.findOne("{name:'zhangsan1'}").as(Student.class);System.out.println(one);}//插入@Testpublic void testJongoWrite(){Student student = new Student();student.setNum("112");student.setName("zhangkeke");student.setAge(20);col.save(student);}/** * #表示占位符，动态添加参数 动态参数的添加支持类如col.find("{address;#}",new Address(....)) *  */@Testpublic void testJongoQuery(){Student student = new Student();student.setName("zhangkeke");Student s = col.findOne("{name:#,age:#}","zhangkeke",24).as(Student.class);System.out.println(s);}//修改@Testpublic void testJongoUpdate(){col.update("{name:#}", "zhangkeke").upsert().multi().with("{$inc:{age:#}}",1);testJongoQuery();}}

to be continue.......

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