spring源码、约束文件和文档说明下载地址：http://repo.spring.io/release/org/springframework/spring/
Spring文件最全配置
Application.xml最全格式
<?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:util="http://www.springframework.org/schema/util" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:jms="http://www.springframework.org/schema/jms" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:oxm="http://www.springframework.org/schema/oxm" xmlns:task="http://www.springframework.org/schema/task" xmlns:tool="http://www.springframework.org/schema/tool" xmlns:websocket="http://www.springframework.org/schema/websocket" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd http://www.springframework.org/schema/websocket http://www.springframework.org/schema/websocket/spring-websocket.xsd"> </beans>
key值：
#key的类型为 Schema location #beans的key值 http://www.springframework.org/schema/beans/spring-beans.xsd #util的key值 http://www.springframework.org/schema/util/spring-util.xsd #jee的key值 http://www.springframework.org/schema/jee/spring-jee.xsd #lang的key值 http://www.springframework.org/schema/lang/spring-lang.xsd #jms的key值 http://www.springframework.org/schema/jms/spring-jms.xsd #aop的key值 http://www.springframework.org/schema/aop/spring-aop.xsd #tx的key值 http://www.springframework.org/schema/tx/spring-tx.xsd #context的key值 http://www.springframework.org/schema/context/spring-context.xsd #jdbc的key值 http://www.springframework.org/schema/jdbc/spring-jdbc.xsd #cache的key值 http://www.springframework.org/schema/cache/spring-cache.xsd #mvc的key值 http://www.springframework.org/schema/mvc/spring-mvc.xsd #oxm的key值 http://www.springframework.org/schema/oxm/spring-oxm.xsd #task的key值 http://www.springframework.org/schema/task/spring-task.xsd #tool的key值 http://www.springframework.org/schema/tool/spring-tool.xsd #websocket的key值 http://www.springframework.org/schema/websocket/spring-websocket.xsd
搜索xml->点击XML Catalog->点击add按钮->选择约束文件->选择key的类型和输入key值->点击ok->点击appliy and close
配置schema约束参考：https://blog.csdn.net/simba1949/article/details/79515366
配置了约束后，在配置xml文件时，就会有代码提示信息了。