Spring启动容器初始化Listener

女爷i 2022-07-28 05:11 180阅读 0赞

Spring启动容器初始化Listener 
package com.companyName.dhm.common.uif.system; 
 
import javax.servlet.ServletContext; 
import javax.servlet.ServletContextEvent; 
import javax.servlet.ServletContextListener; 
import org.springframework.context.ApplicationContext; 
import org.springframework.web.context.ContextLoaderListener; 
import org.springframework.web.context.support.WebApplicationContextUtils; 
 
import com.companyName.dhm.common.uif.service.ServiceFactory; 
 
/\*\* 
 \* Spring启动容器初始化Listener 
 \* Copyright: Copyright (c) 2009 
 \* Company: companyName 
 \*  @author     
 \*  @version   1.0 
 \*/ 
public class StartupListener extends ContextLoaderListener 
    implements ServletContextListener \{ 
 
    /\*\* 
     \* 初始化 
     \*/ 
    public void contextInitialized(ServletContextEvent event) \{ 
        super.contextInitialized(event); 
        ServletContext context = event.getServletContext(); 
        setupContext(context); 
    \} 
 
    /\*\* 
     \* 设置Spring容器上下文 
     \* @param context 
     \*/ 
    public static void setupContext(ServletContext context) \{ 
        ApplicationContext ctx = 
            WebApplicationContextUtils.getRequiredWebApplicationContext(context); 
        ServiceFactory.init(ctx); 
    \} 
\} 
 
 
package com.companyName.dhm.common.uif.service; 
 
import org.springframework.context.ApplicationContext; 
import com.companyName.dhm.common.uif.exception.AppException; 
import com.companyName.dhm.common.uif.exception.AppSystemException; 
import com.companyName.dhm.common.uif.exception.ExceptionConstants; 
 
/\*\* 
 \* Service工厂类ͬ��ʵ���� 
 \* Copyright: Copyright (c) 2009 
 \* Company: companyName 
 \*  @author     
 \*  @version   1.0 
 \*/ 
public class ServiceFactory \{ 
     
    /\*\* 
     \* Spring上下文容器 
     \*/ 
    private static ApplicationContext ctx = null; 
 
    /\*\* 
     \* 初始化 
     \* @param context 
     \*/ 
    public static void init(ApplicationContext context) \{ 
        ctx = context; 
    \} 
     
    /\*\* 
     \* 获取业务对象 
     \* @param serviceName 
     \* @return 
     \* @throws AppException 
     \*/ 
    public static Service getService(String serviceName) throws AppException \{ 
        if (ctx == null) \{   
            throw new AppSystemException("创建业务对象失败！", 
                             ExceptionConstants.SYS\_GENERAL\_ERR); 
        \} 
        return (Service) ctx.getBean(serviceName); 
 
 
    \} 
     
    public static ApplicationContext getCtx()\{ 
        return ctx; 
    \} 
 
\} 
 
package com.companyName.dhm.common.uif.exception; 
 
import java.text.SimpleDateFormat; 
import java.util.Date; 
import java.io.PrintStream; 
import java.io.PrintWriter; 
 
/\*\* 
 \* 异常抽象类ͬ��ʵ���� 
 \* Copyright: Copyright (c) 2009 
 \* Company: companyName 
 \*  @author     
 \*  @version   1.0 
 \*/ 
public abstract class AppException extends Exception \{ 
 
    private int errorCode = ExceptionConstants.SUCCESS; 
 
    private String exceptionId; 
     
    protected Throwable cause; 
 
    public AppException(int errorCode) \{ 
        super(); 
        this.errorCode = errorCode; 
        genExceptionId(); 
    \} 
 
    public AppException(String message, int errorCode) \{ 
        super(message); 
        this.errorCode = errorCode; 
        genExceptionId(); 
    \} 
 
    public AppException(Throwable cause, int errorCode) \{ 
        super(cause); 
        this.cause = cause; 
        this.errorCode = errorCode; 
        genExceptionId(); 
    \} 
 
    public AppException(String message, Throwable cause, int errorCode) \{ 
        super(message, cause); 
        this.errorCode = errorCode; 
        this.cause = cause; 
        genExceptionId(); 
    \} 
 
    public int getErrorCode() \{ 
        return errorCode; 
    \} 
 
    public void setErrorCode(int errorCode) \{ 
        this.errorCode = errorCode; 
    \} 
 
    public void genExceptionId() \{ 
        String idFormat = "yyMMddHHmmssS"; 
        SimpleDateFormat sdf = new SimpleDateFormat(idFormat); 
        this.exceptionId = sdf.format(new Date()); 
    \} 
 
    public String getExceptionId() \{ 
        return exceptionId; 
    \} 
 
    public void setExceptionId(String exceptionId) \{ 
        this.exceptionId = exceptionId; 
    \} 
 
    public void printStackTrace(PrintStream s) \{ 
        s.println("<app\_exception>\\r\\n\\t<exception\_id>" + exceptionId + 
            "</exception\_id>\\r\\n"); 
        s.println("\\t<exception-localized-message>" + "ErrorCode=" + 
            getErrorCode() + " LocalizedMessage=" + 
            getLocalizedMessage() + 
            "</exception-localized-message>\\r\\n\\t<exception\_stack\_trace>"); 
        super.printStackTrace(s); 
        s.println("\\t</exception\_stack\_trace>\\r\\n</app\_exception>"); 
    \} 
 
    public void printStackTrace(PrintWriter s) \{ 
        s.println("<app\_exception>\\r\\n\\t<exception\_id>" + exceptionId + 
            "</exception\_id>\\r\\n"); 
        s.println("\\t<exception-localized-message>" + "ErrorCode=" + 
            getErrorCode() + " LocalizedMessage=" + 
            getLocalizedMessage() + 
            "</exception-localized-message>\\r\\n\\t<exception\_stack\_trace>"); 
        super.printStackTrace(s); 
        s.println("\\t</exception\_stack\_trace>\\r\\n</app\_exception>"); 
    \} 
 
\} 
 
package com.companyName.dhm.common.uif.exception; 
 
/\*\* 
 \* 系统异常ͬ��ʵ���� 
 \* Copyright: Copyright (c) 2009 
 \* Company: companyName 
 \*  @author     
 \*  @version   1.0 
 \*/ 
public class AppSystemException extends AppException \{ 
    public AppSystemException(int errorCode) \{ 
        super(errorCode); 
    \} 
 
    public AppSystemException(String message, int errorCode) \{ 
        super(message, errorCode); 
    \} 
 
    public AppSystemException(Throwable cause, int errorCode) \{ 
        super(cause, errorCode); 
    \} 
 
    public AppSystemException(String message, Throwable cause, int errorCode) \{ 
        super(message, cause, errorCode); 
    \} 
 
\} 
 
package com.companyName.dhm.common.uif.exception; 
 
/\*\* 
 \* 异常常量类ͬ��ʵ���� 
 \* Copyright: Copyright (c) 2009 
 \* Company: companyName 
 \*  @author     
 \*  @version   1.0 
 \*/ 
public class ExceptionConstants \{ 
 
    public static final int SUCCESS = 0; 
 
    public static final int SYS\_GENERAL\_ERR = 1; 
 
    public static final int DB\_COMMON\_ERR = 1001; 
 
    public static final int DB\_CONN\_ERR = 1002; 
 
\}