利用反射JavaBean和Document相互转换，Java方便操作插入MongoDB数据库

JavaBean和Document相互转换

引入依赖

  		<dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongodb-driver</artifactId>
            <version>3.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>bson</artifactId>
            <version>3.4.1</version>
        </dependency>

直接撸代码 创建注解类 Column，NotColumn两个

Column

import java.lang.annotation.ElementType;

import  java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Column {
   
    public String name();
    public String text() default "这是一个属性映射";
}

NotColumn

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface NotColumn {
   
    public String text() default "不是属性字段";
}

创建BsonUtil类

import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import org.bson.Document;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.util.ArrayList;
import java.util.List;

/*
 * 将mongo的文档转化为对象将对象转化为mongo文档
 * @author:zhoub
 */
public class BsonUtil {
   
    /**
     * 将Document列换转换JavaList
     * @param documents
     * @param clazz
     * @param <T>
     * @return
     * @throws IllegalArgumentException
     * @throws InstantiationException
     * @throws IllegalAccessException
     * @throws InvocationTargetException
     */
    public static <T> List<T> toBeans(List<Document> documents, Class<T> clazz)
            throws IllegalArgumentException, InstantiationException,
            IllegalAccessException, InvocationTargetException {
   
        List<T> list = new ArrayList<T>();
        for (int i = 0; null != documents && i < documents.size(); i++) {
   
            list.