如何在 Velocity 上配置 UTF-8？

发布于 2024-12-11 02:52:55 字数 1224 浏览 0 评论 0原文

使用 Java、Servlet、MySQL、Tomcat 和 Velocity，采取以下步骤：

velocity.properties：
- input.encoding=UTF-8
- output.encoding=UTF-8
server.xml
- URIEncoding = UTF-8
字符集
- meta http-equiv="Content-Type" content="text/html;CHARSET=UTF-8"
Eclipse 属性、项目属性、文件和文件编辑器编码
- 设置所有适用于 UTF-8 的内容
设置所有适用于 UTF-8 JDBC 连接的：
- db.url=jdbc:mysql://:/?useEncoding=true&characterEncoding=UTF-8
java/servlet 代码：
- request.setCharacterEncoding(UTF-8)

以上所有方法均无效。直到完成以下代码：

private String getParameter(String key) {
    String param = request.getParameter(key);
        if (Util.isNotEmpty(param)) {
            try {
                return new String(param.getBytes("8859_1"), "utf-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            return param;
        }
    return null;
}

上面的意思是 request.setCharacterEncoding 没有效果（ getCharacterEncoding() 确实返回 UTF-8 ）；知道请求包装器包装在 ThreadLocal 对象中。

这是如何引起的以及如何解决？

原文

Using Java, Servlets, MySQL, Tomcat and Velocity, the following steps were taken:

velocity.properties :
- input.encoding=UTF-8
- output.encoding=UTF-8
server.xml
- URIEncoding = UTF-8
<html><head> Charset
- meta http-equiv="Content-Type" content="text/html;CHARSET=UTF-8"
eclipse properties, project properties, file & editor encoding
- set all that apply to UTF-8
JDBC connection:
- db.url=jdbc:mysql://:/?useEncoding=true&characterEncoding=UTF-8
java/servlet code:
- request.setCharacterEncoding( UTF-8 )

All of the above didn't work. Until the following code was done:

private String getParameter(String key) {
    String param = request.getParameter(key);
        if (Util.isNotEmpty(param)) {
            try {
                return new String(param.getBytes("8859_1"), "utf-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            return param;
        }
    return null;
}

The above means that request.setCharacterEncoding didn't have an effect ( getCharacterEncoding() does return UTF-8 ); knowing that the request wrapper is wrapped in a ThreadLocal object.

How is this caused and how can I solve it?

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终弃我 2024-12-18 02:52:55

为了正确解释参数，tomcat 需要将 URL 解析为 UTF-8。在 server.xml 连接器属性中设置此项，例如：

<Connector port="8080"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" redirectPort="8443" acceptCount="100"
               debug="0" connectionTimeout="20000" 
               disableUploadTimeout="true" 
               URIEncoding="UTF-8"/>

To interpret parameters correctly, the URL needs to be parsed as UTF-8 by tomcat. Set this in the server.xml connector properties, e.g. with:

<Connector port="8080"
               maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
               enableLookups="false" redirectPort="8443" acceptCount="100"
               debug="0" connectionTimeout="20000" 
               disableUploadTimeout="true" 
               URIEncoding="UTF-8"/>

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