預先準備

配置版本

spring MVC 4.1.1

spring-data-mongodb 1.60

mongodb3.2.1

springMVC開發環境已經配好

mongodb新增使用者

注意事項：mongodb3.0版本後密碼加密有兩種方式，MONGODB－CR兩種方式，3.0版本之後預設為SCRAM－SHA－1，而spring mongodb預設是MONGODB－CR，此版本並不支援設定加密方式，導致常常出現如下問題：

org.springframework.data.mongodb.CannotGetMongoDbConnectionException: Failed to authenticate to database [xxxx], username = [xxxxx], password = [x******x]
	org.springframework.data.mongodb.core.ReflectiveDbInvoker.authenticate(ReflectiveDbInvoker.java:83)
	org.springframework.data.mongodb.core.MongoDbUtils.doGetDB(MongoDbUtils.java:127)
	org.springframework.data.mongodb.core.MongoDbUtils.getDB(MongoDbUtils.java:94)
	org.springframework.data.mongodb.core.SimpleMongoDbFactory.getDb(SimpleMongoDbFactory.java:203)
	org.springframework.data.mongodb.core.SimpleMongoDbFactory.getDb(SimpleMongoDbFactory.java:191)
	org.springframework.data.mongodb.core.MongoTemplate.getDb(MongoTemplate.java:1606)
	org.springframework.data.mongodb.core.MongoTemplate.executeFindOneInternal(MongoTemplate.java:1839)
	org.springframework.data.mongodb.core.MongoTemplate.doFindOne(MongoTemplate.java:1656)
	org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:564)
	org.springframework.data.mongodb.core.MongoTemplate.findOne(MongoTemplate.java:559)
	com.oneday.ashop.core.base.mongo.BaseMongoDaoSupport.findOne(BaseMongoDaoSupport.java:81)
	com.oneday.ashop.webgate.user.UserDao.findUser(UserDao.java:44)
	com.oneday.ashop.webgate.user.UserService.login(UserService.java:88)
	com.oneday.ashop.webgate.user.UserControl.login(UserControl.java:57)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
 

1.檢視加密方式

db.system.version.findOne({"_id" : "authSchema"})

5:SCRAM－SHA－1

3:MONGODB－CR

2.如果當前的monggodb已經有了使用者，要先刪除掉所有使用者：

mongo
use admin
db.system.users.remove({})    <== removing all users
db.system.version.remove({}) <== removing current version 
db.system.version.insert({ "_id" : "authSchema", "currentVersion" : 3 })
 

>mongo
>use admin

>db.createUser({user:'admin',pwd:'123456', roles:[{role:'userAdminAnyDatabase', db:'admin'}]})

//使用者角色可以百度

4.新建專案資料庫－projectDB

注意事項：當我們新建projectDB後，一般會認為admin使用者的許可權是__system,該使用者會擁有projectDB的一切許可權，事實是也是如此，但是當在spring中用該admin進行登陸時，是沒有許可權的，關於這一點我目前還沒有深究，也就是說必須為projectDB新建一個使用者賦予dbadmin角色。

>use projectDB
>db.createUser({user:'projectUser',pwd:'123456', roles:[{role:'dbAdmin', db:'projectDB'}]})

spring 配置MongoDB連線

config.properties檔案

mongo.locate=localhost:27017
mongo.dbname=projectDB
mongo.connectionsPerHost=4  
mongo.threadsAllowedToBlockForConnectionMultiplier=20  
mongo.connectTimeout=0  
mongo.maxWaitTime=10000  
mongo.autoConnectRetry=true  
mongo.socketKeepAlive=true  
mongo.socketTimeout=0  
mongo.username=projectUser
mongo.password=123456

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mongo="http://www.springframework.org/schema/data/mongo"
    xsi:schemaLocation="
    	http://www.springframework.org/schema/context
    	http://www.springframework.org/schema/context/spring-context-4.1.xsd
		http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
		http://www.springframework.org/schema/data/mongo
        http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd">
          
          
        <!-- 載入屬性配置檔案 裡面配置了mongodb的屬性 -->   
	 <context:property-placeholder location="classpath:config.properties"/> 
          
        <!-- 定義mongo物件，對應的是mongodb官方jar包中的Mongo，replica-set設定叢集副本的ip地址和埠 -->  
        <mongo:mongo id="mongo" replica-set="${mongo.locate}">  
            <!-- 一些連線屬性的設定 -->      
            <mongo:options
                 connections-per-host="${mongo.connectionsPerHost}"  
                 threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}"  
                 connect-timeout="${mongo.connectTimeout}" 
                 max-wait-time="${mongo.maxWaitTime}"  
                 auto-connect-retry="${mongo.autoConnectRetry}"  
                 socket-keep-alive="${mongo.socketKeepAlive}" 
                 socket-timeout="${mongo.socketTimeout}" 
                 write-number="1"  
                 write-timeout="0"  
                 write-fsync="true"/>  
        </mongo:mongo>  
                      
        <!-- mongo的工廠，通過它來取得mongo例項,dbname為mongodb的資料庫名，沒有的話會自動建立 -->  
        <mongo:db-factory dbname="${mongo.dbname}" mongo-ref="mongo"/>
        <!--設定使用者驗證-->  

        <bean id="userCredentials" class="org.springframework.data.authentication.UserCredentials">
		  <constructor-arg   name="username" value="${mongo.username}" /> 
		  <constructor-arg   name="password" value="${mongo.password}" /> 
	   </bean>
        <!-- mongodb的主要操作物件，所有對mongodb的增刪改查的操作都是通過它完成 -->  
        <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">  
          <constructor-arg name="mongo" ref="mongo"/>  
          <constructor-arg name="databaseName" value="${mongo.dbname}" />
        	<constructor-arg name="userCredentials" ref="userCredentials" />
        </bean>  
    </beans>