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1、jsp页面乱码解决(2步);
新建jsp页面;
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
</body>
</html>
- 习惯上,设置工程中设置项目默认编码为“UTF-8“;
- 将新建的jsp页面的三处编码全部替换为与工程编码一致的“UTF-8”,其中,contentType中的charset是指服务器发送给客户端时的内容编码,pageEncoding是jsp文件本身的编码。
2、表单提交乱码解决(3步);
<form action="./submitBlog" method="post">
<div class="row">
<div class="col-lg-1"><h4>标题</h4></div>
<div class="col-lg-11"><input type="text" class="form-control" placeholder="标题" id="title" name="blogTitle"></div>
</div>
<br>
<textarea class="form-control" rows="20" id="content" name="content"></textarea>
<br>
<div style="float:right">
<button type="button" class="btn btn-success" id="submit_btn">提交</button>
<button type="button" class="btn btn-info" id="save_btn">保存</button>
</div>
</form>
@RequestMapping(value="/submitBlog",method=RequestMethod.POST)
public String submitBlog(HttpServletRequest request, Blog blog){
//System.out.println("ContentType: "+request.getContentType());
//System.out.println("Request请求的编码格式为:"+request.getCharacterEncoding());
/*请求内容自动注入到blog中,并且能够正常显示*/
return "redirect:personalSpace";
}
未进行第三步之前,通过request.getCharacterEncoding()查看的HttpServletRequest的默认编码为null;
- web.xml中设置过滤器,对每个URL请求进行编码转换;
<!-- 使用Filter进行编码转换 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern> <!-- 不要使用/,使用/*代替才能够真正起作用,还需要配置在ContextLoaderListener后才能起作用 -->
</filter-mapping>
设置了针对请求的编码转换的Filter之后,再次通过request.getCharacterEncoding()查看HttpServletRequest的编码为"UTF-8";
查看CharacterEncodingFilter类的源码,可以看到;
public class CharacterEncodingFilter extends OncePerRequestFilter {
/*设置Request请求要转换为的编码*/
private String encoding;
/*设置是否强制对Request和Response内容转码*/
private boolean forceEncoding = false;
/*其他方法*/
@Override
protected void doFilterInternal(
HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
if (this.encoding != null && (this.forceEncoding || request.getCharacterEncoding() == null)) {
request.setCharacterEncoding(this.encoding);
if (this.forceEncoding) {
response.setCharacterEncoding(this.encoding);
}
}
filterChain.doFilter(request, response);
}
}
CharacterEncodingFilter的doFilterInternal方法由它的父类OncePerRequestFilter的doFilter方法进行调用,对HttpServletRequest、HttpServletResponse进行了编码转换。
3、URL中的中文参数注入到Controller对应方法的形参时乱码;
问题:
<a href="./editBlog?blogTitle=${blog.blogTitle}" style="color:black"><span class="glyphicon glyphicon-pencil"></span></a>
或
$(".delete").click(function(){
var url = "./deleteBlog?blogTitle="+$(this).attr("id"); //属性id中含中文
var temp = $(this).parents(".panel");//被删除的元素需要预先保留,否则已经删除的元素是无法获取其父元素的。
$.post(url, function(data, status){
if(status=="success"){
temp.fadeOut("slow");
}
});
});
通过上述两种方式提交的中文注入到Controller的对应方法时出现乱码。
解决方案:
@RequestMapping("/editBlog")
public String editBlog(HttpServletRequest request,@RequestParam("blogTitle")String blogTitle){
try {
blogTitle = new String(blogTitle.getBytes("ISO-8859-1"), "UTF-8"); //需要进行转码
} catch (UnsupportedEncodingException e) {
System.out.println("编码转换出错了!!!");
}
/*其他处理*/
}
不知为啥,注入到URL处理方法形参中的字符串采用ISO-8859-1编码,不过进行编码转换后,就正常了。 |
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