{"id":2190,"date":"2022-12-05T21:52:35","date_gmt":"2022-12-05T13:52:35","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2190"},"modified":"2022-12-19T20:36:51","modified_gmt":"2022-12-19T12:36:51","slug":"servlet-%e8%af%b7%e6%b1%82%e9%87%8d%e5%ae%9a%e5%90%91%e3%80%81servlet-%e8%af%b7%e6%b1%82%e9%87%8d%e5%ae%9a%e5%90%91%e7%ac%ac%e4%ba%8c%e7%a7%8d%e5%ae%9e%e7%8e%b0%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2190","title":{"rendered":"Servlet-\u8bf7\u6c42\u91cd\u5b9a\u5411\u3001\u8bf7\u6c42\u91cd\u5b9a\u5411\u7b2c\u4e8c\u79cd\u5b9e\u73b0\u65b9\u6848"},"content":{"rendered":"\n

\u8bf7\u6c42\u91cd\u5b9a\u5411<\/p>\n\n\n\n

\u8bf7\u6c42\u91cd\u5b9a\u5411\uff0c\u662f\u6307\u5ba2\u6237\u7aef\u7ed9\u670d\u52a1\u5668\u53d1\u8bf7\u6c42\uff0c\u7136\u540e\u670d\u52a1\u5668\u544a\u8bc9\u5ba2\u6237\u7aef\u8bf4\u3002\u6211\u7ed9\u4f60\u4e00\u4e9b\u5730\u5740\u3002\u4f60\u53bb\u65b0\u5730\u5740\u8bbf\u95ee\u3002\u53eb\u8bf7\u6c42\u91cd\u5b9a\u5411\uff08\u56e0\u4e3a\u4e4b\u524d\u7684\u5730\u5740\u53ef\u80fd\u5df2\u7ecf\u88ab\u5e9f\u5f03\uff09\u3002<\/p>\n\n\n\n

\u8bf7\u6c42\u91cd\u5b9a\u5411\u4e0d\u80fd\u91cd\u5b9a\u5411\u5230\u53d7\u4fdd\u62a4\u7684\u8d44\u6e90\uff08WEB-INF\uff09\uff0c\u4f46\u53ef\u4ee5\u91cd\u5b9a\u5411\u5230\u5916\u90e8\u8d44\u6e90<\/p>\n\n\n\n

Response1\u8bbe\u7f6e\u7684\u5c5e\u6027\uff0c\u5728\u91cd\u5b9a\u5411\u5230Response2\u540e\u65e0\u6cd5\u83b7\u53d6Response1\u8bbe\u7f6e\u7684\u5c5e\u6027\uff0c\u8fd4\u56de\u4e3anull<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\u8bf7\u6c42\u91cd\u5b9a\u5411\u7684\u7b2c\u4e00\u79cd\u65b9\u6848\uff1a\n\/\/ \u8bbe\u7f6e\u54cd\u5e94\u72b6\u6001\u7801 302 \uff0c\u8868\u793a\u91cd\u5b9a\u5411\uff0c\uff08\u5df2\u642c\u8fc1\uff09\nresp.setStatus(302);\n\/\/ \u8bbe\u7f6e\u54cd\u5e94\u5934\uff0c\u8bf4\u660e \u65b0\u7684\u5730\u5740\u5728\u54ea\u91cc\nresp.setHeader(\"Location\", \"http:\/\/localhost:8080\");\n \n\u8bf7\u6c42\u91cd\u5b9a\u5411\u7684\u7b2c\u4e8c\u79cd\u65b9\u6848\uff08\u63a8\u8350\u4f7f\u7528\uff09\uff1a\nresp.sendRedirect(\"http:\/\/localhost:8080\");<\/code><\/pre>\n\n\n\n
package top.qaqaq.P158;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\n\nimport java.io.IOException;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-05 \u4e0b\u5348 8:18\n *\/\npublic class Response1 extends HttpServlet {\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/        super.doGet(req, resp);\n\n        \/\/\u91cd\u5b9a\u5411\u7f51\u7ad9\u4e0d\u80fd\u83b7\u53d6\u5230\u4e4b\u524d\u8bbe\u7f6e\u7684\u5c5e\u6027\n        req.setAttribute(\"key1\",\"value1\");\n\n        System.out.println(\"\u66fe\u5230\u6b64\u4e00\u6e38 Response1\");\n\n        \/\/\u65b9\u5f0f\u4e00\uff1a\n        \/\/ \u8bbe\u7f6e\u54cd\u5e94\u72b6\u6001\u7801302\uff0c\u8868\u793a\u91cd\u5b9a\u5411\uff0c\uff08\u5df2\u642c\u8fc1\uff09\n\/\/        resp.setStatus(302);\n\n\/\/        resp.setHeader(\"Location\", \"http:\/\/localhost:8080\/JavaWeb_Code_Servlet\/response2\");\n        \/\/\u4e0d\u80fd\u91cd\u5b9a\u5411\u5230\u53d7\u4fdd\u62a4\u7684\u8d44\u6e90\n\/\/        resp.setHeader(\"Location\", \"http:\/\/localhost:8080\/JavaWeb_Code_Servlet\/WEB-INF\/form.html\");\n        \/\/\u53ef\u4ee5\u91cd\u5b9a\u5411\u5230\u5916\u90e8\u7f51\u7ad9\n\/\/        resp.setHeader(\"Location\", \"http:\/\/localhost:8080\");\n\n        \/\/\u65b9\u5f0f\u4e8c\uff1a\n        resp.sendRedirect(\"http:\/\/localhost:8080\");\n    }\n}\n<\/code><\/pre>\n\n\n\n
package top.qaqaq.P158;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\n\nimport java.io.IOException;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-05 \u4e0b\u5348 8:18\n *\/\npublic class Response2 extends HttpServlet {\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/        super.doGet(req, resp);\n\n        \/\/\u91cd\u5b9a\u5411\u7f51\u7ad9\u4e0d\u80fd\u83b7\u53d6\u5230\u4e4b\u524d\u8bbe\u7f6e\u7684\u5c5e\u6027\n        System.out.println(req.getAttribute(\"key1\"));\n\n        resp.getWriter().write(\"response2's result!\");\n    }\n}\n<\/code><\/pre>\n\n\n\n
    <servlet>\n        <servlet-name>Response1<\/servlet-name>\n        <servlet-class>top.qaqaq.P158.Response1<\/servlet-class>\n    <\/servlet>\n    <servlet-mapping>\n        <servlet-name>Response1<\/servlet-name>\n        <url-pattern>\/response1<\/url-pattern>\n    <\/servlet-mapping>\n\n    <servlet>\n        <servlet-name>Response2<\/servlet-name>\n        <servlet-class>top.qaqaq.P158.Response2<\/servlet-class>\n    <\/servlet>\n    <servlet-mapping>\n        <servlet-name>Response2<\/servlet-name>\n        <url-pattern>\/response2<\/url-pattern>\n    <\/servlet-mapping><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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