httpClenit的post出现乱码问题

　　在使用httpClient.executeMethod(postMethod)的时候，发现一直存在乱码问题，”book is good“被转成”book+is+good“ 返回。查看源码后，发现post这一端底层还会encode,于是就要有一个decode配对才行。

　　实际上post的底层encode的是是“ ISO8859-1”的方式，之后中文，俄语之类的语种就会被转义成乱码（“Машинка стрижет” 被转义成  %3F%3F%3F%3F%3F%3F%3F+%3F%3F%3F%3F%3F%3F%3F）。

　　PostMethod postMethod = new PostMethod(ParseRequest.UrlPage(httpUrl));

　　/* 一定要指定utf-8版本 不然post 默认用iso编码直接会把俄语编码 搞乱 */
　　postMethod.getParams().setContentCharset("UTF-8");

留下证据：

protected RequestEntity generateRequestEntity() {
        if (!this.params.isEmpty()) {
            // Use a ByteArrayRequestEntity instead of a StringRequestEntity.
            // This is to avoid potential encoding issues.  Form url encoded strings
            // are ASCII by definition but the content type may not be.  Treating the content
            // as bytes allows us to keep the current charset without worrying about how
            // this charset will effect the encoding of the form url encoded string.
            String content = EncodingUtil.formUrlEncode(getParameters(), getRequestCharSet());
            ByteArrayRequestEntity entity = new ByteArrayRequestEntity(
                EncodingUtil.getAsciiBytes(content),
                FORM_URL_ENCODED_CONTENT_TYPE
            );
            return entity;
        } else {
            return super.generateRequestEntity();
        }
    }