我正在編寫(xiě)文件傳輸處理程序。請(qǐng)求是多部分 HTTP 消息。該消息是正確的 - 在其他服務(wù)器上測(cè)試。問(wèn)題是 getParts() 調(diào)用上的“java.lang.IllegalStateException: No multipart config for servlet”。測(cè)試代碼：@SuppressWarnings("serial")@MultipartConfig@WebServlet(urlPatterns={"/upload"}, name="upload")public class FilesServlet extends HttpServlet{ @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/plain"); PrintWriter out = resp.getWriter(); int i=0; for(Part part: req.getParts()) { out.printf("Got part: name=%s, size=%d%n",part.getName(), part.getSize()); part.write(String.format("part-%02d.dat",i++)); } }}例外：java.lang.IllegalStateException: No multipart config for servlet at org.eclipse.jetty.server.Request.getParts(Request.java:2327) at org.eclipse.jetty.server.Request.getParts(Request.java:2314) at com.rad.server.servlet.FilesServlet.doPost(FilesServlet.java:31) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:860) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:535) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)jars 是：jetty-server-9.4.8 和 javax-servlet-api-3.10。這里有什么問(wèn)題？
2 回答
牧羊人nacy
TA貢獻(xiàn)1862條經(jīng)驗(yàn) 獲得超7個(gè)贊
實(shí)際上，我沒(méi)有找到為什么 @MultipartConfig 注釋對(duì)我不起作用，但我在 i-net 上發(fā)現(xiàn)了一種工作正常的解決方法：
private static final MultipartConfigElement MULTI_PART_CONFIG = new MultipartConfigElement("c:/temp");
...
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String contentType = request.getContentType();
if(contentType != null && contentType.startsWith("multipart/")){
request.setAttribute(Request.__MULTIPART_CONFIG_ELEMENT, MULTI_PART_CONFIG);
for(Part part: request.getParts()) { ... } ;
} else {
...
}
}
我認(rèn)為此解決方案可能對(duì)遇到此類問(wèn)題的開(kāi)發(fā)人員有用
精慕HU
TA貢獻(xiàn)1845條經(jīng)驗(yàn) 獲得超8個(gè)贊
當(dāng)您將 servlet 映射到路徑時(shí)，為什么不配置它？
handler.addServlet(UploadServlet.class, "/upload/*")
.getRegistration().setMultipartConfig(
new MultipartConfigElement("./tmp")
);
到達(dá)此 servlet 的每個(gè)請(qǐng)求都將使用該屬性進(jìn)行豐富
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