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>