中文字符集的解决
解决中文字符集应用mvc提供的一个CharacterEncodingFilter过滤器，只须要在web.xml配置信息外面增加如下过滤器配置
<filter>
<filter-name>characterEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<!-- 配置字符集-->
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param></filter>
<filter-mapping>
<filter-name>characterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>自定义类型转换器
情景案例：咱们须要在网页上输出一个日期，然而springmvc有本人的日期转换格局类型，然而咱们想用咱们本人的格局，这时候就须要自定义一个类型转换器
- 1）自定义一个类，实现Converter接口，重写办法
/**
* 自定义转化器：将String转化成Date
*/public class StringToDateConverter implements Converter<String, Date> {
@Override
public Date convert(String s) {
//自定义一个转换规则
//将申请发送过去的String信息转化成本人要的那个对象
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh-mm-ss");
Date date = null;
try {
date = sdf.parse(s);
} catch (ParseException e) {
e.printStackTrace();
}
//将对象返回
return date;
}
}- 2）告知Spring须要加载并治理该对象，Spring的外围配置文件信息如下：
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 开启spring注解驱动-->
<context:component-scan base-package="com.cjh"/>
<!-- 开启mvc注解驱动-->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 加载一个类型转换器，这个类是用来帮咱们治理咱们自定义的类型转换器-->
<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<set> <bean class="com.cjh.util.StringToDateConverter"/>
</set> </property> </bean>
<!-- 手动配置这个类的驱动-->
<mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
</beans>-
3）具体实现如下：
- JSP：
<%@ page contentType="text/html; charset=UTF-8" language="java" %> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>cai jin hong</title> <style> </style></head> <body> <form action="testFive.do" method="post"> date：<input type="text" name="date" value=""> <input type="submit" value="submit"> </form> </body> </html>- Java代码：
@Controller public class UserController { //办法中传入实体对象：对象外面有list汇合 @RequestMapping("testFive.do") public void testFive(Date date){ System.out.println(user); } }
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