在实际项目中,我们难免会遇到一些无值.当我们转JSON时,不希望这些null出现,比如我们期望所有的null在转JSON时都变成“”“”这种空字符串,那怎么做呢? Jackson中对null的处理 @Configuration public class JacksonConfig { @Bean @Primary @ConditionalOnMissingBean(ObjectMapper.class) public ObjectMapper jacksonObjectMapper(Jackso
spring jdbcTemplate query 返回值为null 今天使用以下方法从数据库中查询数据,返回列表 public List<BookBean> getBooks(){ String sql = "select * from books where inventory > 0 order by title"; List<BookBean> books = jdbcTemplate.query(sql, new BeanPropertyRowM
JsonResult作为Action返回值时的错误 System.InvalidOperationException: This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior t
Spring Boot 集成教程 Spring Boot 介绍 Spring Boot 开发环境搭建(Eclipse) Spring Boot Hello World (restful接口)例子 spring boot 连接Mysql spring boot配置druid连接池连接mysql spring boot集成mybatis(1) spring boot集成mybatis(2) – 使用pagehelper实现分页 spring boot集成mybatis(3) – mybatis ge
1.XMLHttpRequest status = 0 问题 XMLHttpRequest的说明:http://www.w3.org/TR/XMLHttpRequest/ . The status attribute must return the result of running these steps: status的值一定会返回运行这些步骤的结果. 1.If the state is UNSENT or OPENED, return 0.(如果状态是UNSENT或者OPENED,返回0)
JavaWeb开发中,需要给前端返回的数据加上一些头部的状态信息,来表示请求成功或失败的状态原因 一.数据添加状态信息 1.新建BaseData public class BaseData<T> { private String returnCode; private String returnMsg; private T data; //其他的get set toString 方法略 } 2.定义工具类: public final class ReturnInfoUtils { privat