权限管理demo-获取Spring上下文工具

package com.mmall.common;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component("applicationContextHelper")
public class ApplicationContextHelper implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    public void setApplicationContext(ApplicationContext context) throws BeansException {
        applicationContext = context;
    }

    public static <T> T popBean(Class<T> clazz) {
        if (applicationContext == null) {
            return null;
        }
        return applicationContext.getBean(clazz);
    }

    public static <T> T popBean(String name, Class<T> clazz) {
        if (applicationContext == null) {
            return null;
        }
        return applicationContext.getBean(name, clazz);
    }
}

spring-servlet中配置

<!--不让它懒加载,启动的时候直接加载-->

<bean class=" com.mmall.common.ApplicationContextHelper" lazy-init="false"/>

 

验证JsonMapper和ApplicationContextHelper

 

TestController

 @RequestMapping("/select")
    @ResponseBody
    public JsonData validate(TestVo vo)  {

        SysAclModuleMapper moduleMapper = ApplicationContextHelper.popBean(SysAclModuleMapper.class);
        SysAclModule module = moduleMapper.selectByPrimaryKey(1);

        return JsonData.success(module);
    }

运行tomcat,结果

yintingtingdeMacBook-Pro:generator yintingting$ curl http://localhost:8080/test/validate1.json

{"ret":false,"msg":"{str=不能为空, id=id 不可以为空哦, msg=不能为空}","data":null}              yintingtingdeMacBook-Pro:generator yintingting$ 

 

使用mybatis的时候注意，mybatis和mybatis-spring一定要对应， 当mybatis版本在3.4.0以上，需要mybatis-spring在1.3.0以上