SpringMVC处理乱码及日期类型问题

╰+哭是因爲堅強的太久メ 2024-04-18 16:46 71阅读 0赞

# 1、处理中文乱码问题 #

1、**在web.xml中配置编码过滤器**

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             version="3.0">
    
    
      
      <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        
        <init-param>
          <param-name>encoding</param-name>
          <param-value>UTF-8</param-value>
        </init-param>
        
        <init-param>
          <param-name>forceEncoding</param-name>
          <param-value>true</param-value>
        </init-param>
      </filter>
      
      <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
    </web-app>

2、**修改Tomcat编码格式**  
apache-tomcat-9.0.17\\conf\\logging.properties  
![在这里插入图片描述][20190911173424402.png]  
3、若用到log4j日志，也需要修改编码为GBK

# 2、Date日期类型处理 #

### 2.1 方式一:在对象字段或Controller形参上添加上@DateTimeFormat(pattern=“yyyy-MM-dd”) ###

@Setter@Getter@ToString
    @AllArgsConstructor@NoArgsConstructor
    public class User {
    
        private Integer id;
        private String name;
        
        @DateTimeFormat(pattern = "yyyy-MM-dd")
        private Date date;
    }

### 2.2 方式二:在Controller类中加入以下代码 ###

@InitBinder
        public void initBinderDateType(WebDataBinder binder){
            SimpleDateFormat sdf = new SimpleDateFormat();
            sdf.applyPattern("yyyy-MM-dd");
            binder.registerCustomEditor(java.util.Date.class,new CustomDateEditor(sdf,true));
        }
        @RequestMapping("/test9")
        public ModelAndView test9(Date d) {
            System.out.println("d = [" + d + "]");
            return null;
        }

### 2.3 方式三:使用@ControllerAdvice注解,该类必须处于能被Spring扫描到的包中 ###

@ControllerAdvice
    public class DateFormatControllerAdvice {
        @InitBinder
        public void initBinderDateType(WebDataBinder binder){
            SimpleDateFormat sdf = new SimpleDateFormat();
            sdf.applyPattern("yyyy-MM-dd");
            binder.registerCustomEditor(java.util.Date.class,new CustomDateEditor(sdf,true));
        }
    }

[20190911173424402.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/827537ce6ccb4175a4ddbab736d846bf.png