一. mongodb 2.2版本以上的配置
spring.data.mongodb.uri = mongodb://newlook:newlook@192.168.0.109:27017/admin
2.2及以下版本的配置
#spring.data.mongodb.host = 192.168.0.109
#spring.data.mongodb.username = newlook #spring.data.mongodb.password = newlook #spring.data.mongodb.defaultDB = admin #spring.data.mongodb.port = 27017二. Configuration
@Bean
PlatformTransactionManager platformTransactionManager() { return new org.springframework.integration.transaction.PseudoTransactionManager(); }<dependency>
<groupId>org.springframework.integration</groupId> <artifactId>spring-integration-core</artifactId></dependency>开始注入了其他的类型的TransactionManager，导致maven中自动引入了jpa相关的依赖，报错如下：
Caused by: java.lang.IllegalStateException: Cannot load driver class: mongodb.jdbc.MongoDriver
原因：
You seem to be trying to mix JPA, which is primarily intended for relational datastores, with MongoDB, which is an "unrelated" document store. Drop the dependency on spring-boot-starter-data-jpa (you simply don't need it) and the spring.datasource.driver-class-name (you should use MongoDB natively, not via a JDBC bridge).
三.org.springframework.dao.OptimisticLockingFailureException: Optimistic lock exception on saving entity
原因：版本控制的类型须为包装类型，
将
@Version
private int version;改为：
@Version
private Integer version;四.数据保存时候id总是empty
原因：ui中id提交时为“”，
将
<input th:field="*{id}" type="hidden"/>
改为：
<input th:field="*{id}" type="hidden" th:disabled="*{id==null}"/>
这样id提交后为null,可自动生成id
相关文档
http://docs.spring.io/spring-data/data-mongo/docs/1.9.2.RELEASE/reference/html/#query-by-example
https://docs.mongodb.com/manual/reference/command/
http://www.thymeleaf.org/doc/tutorials/2.1/usingthymeleaf.html#a-menu-for-our-home-page