biz层下载指定文件

飘零2019

在.J文件调用action去下载指定文件。解决会把.J文件给下载下来。请问是什么原因？action方法

1. public static InputStream test() throws IOException{
   
2.                 String path =com.justep.common.SystemUtils.getHome(null)+"/excel/";
   
3.                 String excelName = "xxxx模板.xlsx";
   
4.                 InputStream in = new FileInputStream(path+excelName); // 获取下载文件的输入流
   
5.                 return in;
   
6.         }

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.J调用

1. Action action = new Action();
   
2.                 action.setProcess("/demo/actions/process/integration/integrationProcess");
   
3.                 action.setActivity("staticActivity2");
   
4.                 action.setName("test");
   
5.                 String bSessionID = "5B66B4A81C4C5CC4BAFBC10B8A16352F";
   
6.                 ActionEngine.invokeAction(action, ActionUtils.BINARY_CONTENT_TYPE, bSessionID, null, new StreamCallback(response));

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jishuang

参考/UI2/demo/actions/process/invokeAction/mainActivity.w中下载的实现

飘零2019

jishuang 发表于 2020-7-15 17:25
参考/UI2/demo/actions/process/invokeAction/mainActivity.w中下载的实现

这个看过了，不在UI层下载，要求在biz层下载

jishuang

BIZ层下载为什么调用.j

飘零2019

jishuang 发表于 2020-7-15 19:10
BIZ层下载为什么调用.j

如果不用.j调用，直接使用sendRequest方法调用吗？

jishuang

js中直接调用action

飘零2019

jishuang 发表于 2020-7-16 18:04
js中直接调用action

不行，如果使用

1. HttpServletResponse response = ContextHelper.getRequestContext().getResponse();

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把文件流写入response中，报

1. java.lang.IllegalStateException: getOutputStream() has already been called for this response
   
2.         at org.apache.catalina.connector.Response.getWriter(Response.java:611)
   
3.         at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)
   
4.         at com.justep.business.server.BusinessServerServlet.doServerError(Unknown Source)
   
5.         at com.justep.business.server.BusinessServerServlet.service(Unknown Source)
   
6.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
   
7.         at com.justep.x.bs.BusinessServerServlet.service(Unknown Source)
   
8.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
   
9.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   
10.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    
11.         at com.justep.micro.service.MicroServiceFilter.doFilter(Unknown Source)
    
12.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    
13.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    
14.         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    
15.         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    
16.         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    
17.         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    
18.         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    
19.         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    
20.         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
    
21.         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
    
22.         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    
23.         at java.lang.Thread.run(Thread.java:745)

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直接返回InputStream报请求错误编码：200。
我的需求是：前台点击下载按钮，调用action方法到指定的目录下载文件。

jishuang

具体需求是要做什么？

飘零2019

jishuang 发表于 2020-7-17 19:40
具体需求是要做什么？

需求：页面有个下载按钮，会下载服务器上指定目录下的模板。要求用户必须是登录之后才能下载，所以想用调用action的方式

jishuang

下载模板具体要做什么？