tomcat8 response重定向带json参数问题，Illegal character in query at...

最新推荐文章于 2023-05-19 22:37:39 发布

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#tomcat #json #redirect #response #illeagle

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本文解决Tomcat 8中使用response.sendRedirect方法携带JSON格式参数时遇到的问题，通过URI编码确保参数正确传递。

问题描述：
tomcat8中response重定向时带json格式的参数String json="{\"a\":\"b\",\"c\":\"d\"}"; response.sendRedirect("rsserver/jsp/ServerMonitor.jsp?resultMap="+json);报错如下：

警告: Failed to redirect to [rsserver/jsp/ServerMonitor.jsp?resultMap={"durationTime":"0天0小时16分25秒","tcpServerURL":"192.163.20.79:9999","WSServerURL":"http://192.163.20.79:9899/RSServer","receiveTotal":"0","sendTotal":"0","receiveError":"0","switchStatus":"启动","sendFailed":"0"}]
java.lang.IllegalArgumentException: 
 index 41: rsserver/jsp/ServerMonitor.jsp?resultMap={"durationTime":"0天0小时16分25秒","tcpServerURL":"192.163.20.79:9999","WSServerURL":"http://192.163.20.79:9899/RSServer","receiveTotal":"0","sendTotal":"0","receiveError":"0","switchStatus":"启动","sendFailed":"0"}
    at java.net.URI.create(Unknown Source)
......

解决方案：
需要对其中的“{“、”}”“\” ”、“,”、“：”进行转义。

String transferredResult =json.replaceAll("\\{","%7B")
                .replaceAll("\\}","%7D")
                .replaceAll("\"","%22")
                .replaceAll("\\:","%3A")
                .replaceAll("\\,","%2C");

response.sendRedirect("rsserver/jsp/ServerMonitor.jsp?resultMap="+transferredResult );