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3.乱码问题集中解决

2021-06-10 23:33:57 作者：互联网

环境：

form.jsp进行post请求

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="/e/t1" method="post">
    <input type="text" name="name">
    <input type="submit">
</form>
</body>
</html>

Encoding.java

@Controller
public class Encoding {
    @PostMapping("/e/t1")
    public String test(String name, Model model){
        model.addAttribute("msg",name);
        return "hello";
    }
}

在表单提交中文转发后会出现乱码

解决方案一：使用filter过滤

public class EncodingFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        servletRequest.setCharacterEncoding("utf-8");
        servletResponse.setCharacterEncoding("utf-8");
        filterChain.doFilter(servletRequest,servletResponse);
    }

    public void destroy() {

    }
}

在web.xml里注册，注意这里是/*不然拦截不到 /*包括了jsp文件

    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>com.wu.filter.EncodingFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

方法二：使用spring自带的过滤器

<filter>
        <filter-name>encoding</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>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

标签：utf,encoding,void,public,乱码,servletResponse,解决,servletRequest,集中
来源： https://www.cnblogs.com/wuyimin/p/14873329.html