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SpringMVC中出現中文亂碼如何解決？針對這個問題，這篇文章詳細介紹了相對應的分析和解答，希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <form action="/c02/t1" method="post"> <input type="text" name="name"> <input type="submit"> </form> </body> </html>
業務控制類
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class controllerDemo02 {
@RequestMapping("/c02/t1")
public String test1(String name, Model model){
System.out.println(name);
model.addAttribute("message",name);
return "test";
}
}結果：出現亂碼
自定義一個Filter過濾器，去過濾亂碼
package Filter;
import javax.servlet.*;
import java.io.IOException;
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中配置這個過濾器
<filter> <filter-name>EncodingFilter</filter-name> <filter-class>Filter.EncodingFilter</filter-class> </filter> <filter-mapping> <filter-name>EncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
直接在web.xml中配置（固定的）
<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>
package Filter;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;
public class GenericEncodingFilter implements Filter {
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
//處理response的字符編碼
HttpServletResponse myResponse=(HttpServletResponse) response;
myResponse.setContentType("text/html;charset=UTF-8");
// 轉型為與協議相關對象
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
// 對request包裝增強
HttpServletRequest myrequest = new MyRequest(httpServletRequest);
chain.doFilter(myrequest, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
}
}
//自定義request對象，HttpServletRequest的包裝類
class MyRequest extends HttpServletRequestWrapper {
private HttpServletRequest request;
//是否編碼的標記
private boolean hasEncode;
//定義一個可以傳入HttpServletRequest對象的構造函數，以便對其進行裝飾
public MyRequest(HttpServletRequest request) {
super(request);// super必須寫
this.request = request;
}
// 對需要增強方法 進行覆蓋
public Map getParameterMap() {
// 先獲得請求方式
String method = request.getMethod();
if (method.equalsIgnoreCase("post")) {
// post請求
try {
// 處理post亂碼
request.setCharacterEncoding("utf-8");
return request.getParameterMap();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else if (method.equalsIgnoreCase("get")) {
// get請求
Map<String, String[]> parameterMap = request.getParameterMap();
if (!hasEncode) { // 確保get手動編碼邏輯只運行一次
for (String parameterName : parameterMap.keySet()) {
String[] values = parameterMap.get(parameterName);
if (values != null) {
for (int i = 0; i < values.length; i++) {
try {
// 處理get亂碼
values[i] = new String(values[i]
.getBytes("ISO-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
}
hasEncode = true;
}
return parameterMap;
}
return super.getParameterMap();
}
//取一個值
public String getParameter(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
if (values == null) {
return null;
}
return values[0]; // 取回參數的第一個值
}
//取所有值
public String[] getParameterValues(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
return values;
}
}關于SpringMVC中出現中文亂碼如何解決問題的解答就分享到這里了，希望以上內容可以對大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關注億速云行業資訊頻道了解更多相關知識。
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