27 Jan 2018

将Servlet转为Spring管理的Servlet Bean

web.xml

<servlet>
    <servlet-name>XB0101SendServlet</servlet-name>
    <servlet-class>
        com.jun.ServletToBeanProxy
    </servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>XB0101SendServlet</servlet-name>
    <url-pattern>/XB0101Send</url-pattern>
</servlet-mapping>

代理类ServletToBeanProxy

public class ServletToBeanProxy extends GenericServlet {
    // 当前客户端请求的Servlet名字
    private String targetBean;
    // 代理Servlet
    private Servlet proxy;
    @Override
    public void init() throws ServletException {
        super.init();
        // 初始化Spring容器
        WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
        // 获取Servlet名
        this.targetBean = getServletName();
        // 调用ServletBean
        this.proxy = (Servlet) wac.getBean(targetBean);
        // 调用初始化方法将ServletConfig传给Bean
        proxy.init(getServletConfig());
    }
    @Override
    public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
        // 在service方法中调用bean的service方法，servlet会根据客户的请求去调用相应的请求方法(Get/Post)
        proxy.service(request, response);
    }
}

使用XB0101SendServlet

public class XB0101SendServlet extends HttpServlet {
    @Inject
    XB0101Send xb0101Send;
    //http://localhost:8080/yz-trans-ws/XB0101Send?vehicleNo=123456\&plateColorCode=1\&province=640000
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //进入请求前的数据准备：业户查询
        xb0101Send.SendXB0101(request.getParameter("no"),request.getParameter("code"));
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request,response);
    }
}

xb0101Send 结构

@Named
public class XB0101Send {
    private static Logger log = LoggerFactory.getLogger(XB0101Send.class);
    @Inject
    protected LoginUser loginUser;
    public QB0101Resp SendXB0101(String no,String code){   };
}

将Servlet转为Spring管理的Servlet Bean

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