| 最近在使用response.sendRedirect()时出现如下错误:
jdk5.0文档中很清楚地介绍了出现IllegalStateException异常的可能情况: 1）同一个页面中再次调用response.sendRedirect()方法。 2）提交的URL错误，即不是个有效的URL。 sendRedirect void sendRedirect(java.lang.String location) throws java.io.IOException Sends a temporary redirect response to the client using the specified redirect location URL. This method can accept relative URLs; the servlet container must convert the relative URL to an absolute URL before sending the response to the client. If the location is relative without a leading '/' the container interdivts it as relative to the current request URI. If the location is relative with a leading '/' the container interdivts it as relative to the servlet container root. If the response has already been committed, this method throws an IllegalStateException. After using this method, the response should be considered to be committed and should not be written to. Parameters: location - the redirect location URL Throws: java.io.IOException - If an input or output exception occurs java.lang.IllegalStateException - If the response was committed or if a partial URL is given and cannot be converted into a valid URL |
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