有话说在前
在上一篇Wheel实例教程 MVC框架Wheel简单实例中,我们介绍了如何使用Wheel创建一个简单的web应用,但是如果按照上一篇的内容实现的话我们所有的代理类(比如事务的注入,依赖注入,请求转发)都是在运行是生成的,那么这一节将采用另一种方式,就是将代理类预先生成在war包中,这样在server中运行我们的项目的时候就无需动态创建了,这样就非常快速和节省性能。当然采用这种方式我们需要采用mavn来构建的,所以你得有点maven基础才成。global.properties
我们在上一篇文章中有一行配置的global.properties如下:generator.class.runtime=true
首先我们要将这个值改成false,这就是告诉程序,我不要在运行的时候生成了。
pom.xml
在pom.xml中添加如下内容:<build>
<plugins>
<plugin>
<groupId>cn.wensiqun</groupId>
<artifactId>wheel-maven-plugin</artifactId>
<version>0.1-SNAPSHOT</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>create-proxy-class</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
等等,wheel-maven-plugin是什么,这个是配合wheel使用的插件,http://code.taobao.org/svn/WheelSampleApp/trunk 这是源码地址。
随便的讲解下
到这里所要做的就OK了,对我们的web项目执行mvn clean install。 在到target目录下去看我们每个class现在的样子吧。 首先多了下面两个class,用反编译的软件看看:package cn.wensiqun.wheel.util.rs;
import jw.jwweb.mock.utils.UserResultConverter;
public class ResultSetConverterBuilderImpl
implements ResultSetConverterBuilder
{
public void build()
{
new UserResultConverter();
}
}
package cn.wensiqun.wheel.mvc;
import cn.wensiqun.wheel.mvc.dispatcher.HttpRequestDispatcher;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.HTMLResolver;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.JSONResolver;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.JSPResolver;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.PlaintextResolver;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.RedirectResolver;
import cn.wensiqun.wheel.mvc.dispatcher.asm.result.VelocityResolver;
import cn.wensiqun.wheel.mvc.exception.InvalidActionReturnValueException;
import cn.wensiqun.wheel.mvc.exception.InvalidRequestPathException;
import cn.wensiqun.wheel.mvc.http.WheelHttpServletRequest;
import cn.wensiqun.wheel.mvc.http.WheelHttpServletResponse;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import jw.jwweb.mock.servlet.MockServletAction;
public class HttpRequestDispatcherImpl
implements HttpRequestDispatcher
{
private static final HTMLResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_HTMLRESOLVER = new HTMLResolver("HTML");
private static final JSONResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_JSONRESOLVER = new JSONResolver("JSON");
private static final JSPResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_JSPRESOLVER = new JSPResolver("JSP");
private static final PlaintextResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_PLAINTEXTRESOLVER = new PlaintextResolver("PLAINTEXT");
private static final RedirectResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_REDIRECTRESOLVER = new RedirectResolver("REDIRECT");
private static final VelocityResolver RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_VELOCITYRESOLVER = new VelocityResolver("VELOCITY");
private void resultProcess(HttpServletRequest req, HttpServletResponse resp, String resultType, String path)
throws Exception
{
if ("HTML".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_HTMLRESOLVER.execute(req, resp, resultType, path);
return;
}
if ("JSON".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_JSONRESOLVER.execute(req, resp, resultType, path);
return;
}
if ("JSP".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_JSPRESOLVER.execute(req, resp, resultType, path);
return;
}
if ("PLAINTEXT".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_PLAINTEXTRESOLVER.execute(req, resp, resultType, path);
return;
}
if ("REDIRECT".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_REDIRECTRESOLVER.execute(req, resp, resultType, path);
return;
}
if ("VELOCITY".equals(resultType))
{
RESULTRESOLVER_CN_WENSIQUN_WHEEL_MVC_DISPATCHER_ASM_RESULT_VELOCITYRESOLVER.execute(req, resp, resultType, path);
return;
}
resp.setContentType("text/html");
resp.getOutputStream().close();
}
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
String result;
MockServletAction obj;
if (servletPath.equals("/MockServlet/execute.action"))
{
obj = MockServletAction._getInstance@();
obj.setHttpServletRequest(req);
obj.setHttpServletResponse(resp);
result = obj.execute();
if ("JSP_RES".equals(result))
{
resultProcess(req, resp, "JSP", "/servlet/test.jsp");
return;
}
if ("Redirect_RES".equals(result))
{
resultProcess(req, resp, "REDIRECT", "/servlet/test.jsp");
return;
}
if ("plaintext_RES".equals(result))
{
resultProcess(req, resp, "PLAINTEXT", "");
return;
}
if ("html_RES".equals(result))
{
resultProcess(req, resp, "HTML", "");
return;
}
if ("json_RES".equals(result))
{
resultProcess(req, resp, "JSON", "");
return;
}
if ("velocity_RES".equals(result))
{
resultProcess(req, resp, "VELOCITY", "/WEB-INF/test.vm");
return;
}
throw new InvalidActionReturnValueException(result, MockServletAction.class, MockServletAction.class.getDeclaredMethod("execute", new Class[0]));
}
String result;
MockServletAction obj;
if (servletPath.equals("/MockServlet/process.action"))
{
obj = MockServletAction._getInstance@();
obj.setHttpServletRequest(req);
obj.setHttpServletResponse(resp);
result = obj.execute();
if ("JSP_RES".equals(result))
{
resultProcess(req, resp, "JSP", "/servlet/test.jsp");
return;
}
if ("Redirect_RES".equals(result))
{
resultProcess(req, resp, "REDIRECT", "/servlet/test.jsp");
return;
}
if ("plaintext_RES".equals(result))
{
resultProcess(req, resp, "PLAINTEXT", "");
return;
}
if ("html_RES".equals(result))
{
resultProcess(req, resp, "HTML", "");
return;
}
if ("json_RES".equals(result))
{
resultProcess(req, resp, "JSON", "");
return;
}
if ("velocity_RES".equals(result))
{
resultProcess(req, resp, "VELOCITY", "/WEB-INF/test.vm");
return;
}
throw new InvalidActionReturnValueException(result, MockServletAction.class, MockServletAction.class.getDeclaredMethod("execute", new Class[0]));
}
throw new InvalidRequestPathException(servletPath);
}
public void doHead(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
throw new InvalidRequestPathException(servletPath);
}
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
String result;
MockServletAction obj;
if (servletPath.equals("/MockServlet/execute.action"))
{
obj = MockServletAction._getInstance@();
obj.setHttpServletRequest(req);
obj.setHttpServletResponse(resp);
result = obj.execute();
if ("JSP_RES".equals(result))
{
resultProcess(req, resp, "JSP", "/servlet/test.jsp");
return;
}
if ("Redirect_RES".equals(result))
{
resultProcess(req, resp, "REDIRECT", "/servlet/test.jsp");
return;
}
if ("plaintext_RES".equals(result))
{
resultProcess(req, resp, "PLAINTEXT", "");
return;
}
if ("html_RES".equals(result))
{
resultProcess(req, resp, "HTML", "");
return;
}
if ("json_RES".equals(result))
{
resultProcess(req, resp, "JSON", "");
return;
}
if ("velocity_RES".equals(result))
{
resultProcess(req, resp, "VELOCITY", "/WEB-INF/test.vm");
return;
}
throw new InvalidActionReturnValueException(result, MockServletAction.class, MockServletAction.class.getDeclaredMethod("execute", new Class[0]));
}
String result;
MockServletAction obj;
if (servletPath.equals("/MockServlet/process.action"))
{
obj = MockServletAction._getInstance@();
obj.setHttpServletRequest(req);
obj.setHttpServletResponse(resp);
result = obj.execute();
if ("JSP_RES".equals(result))
{
resultProcess(req, resp, "JSP", "/servlet/test.jsp");
return;
}
if ("Redirect_RES".equals(result))
{
resultProcess(req, resp, "REDIRECT", "/servlet/test.jsp");
return;
}
if ("plaintext_RES".equals(result))
{
resultProcess(req, resp, "PLAINTEXT", "");
return;
}
if ("html_RES".equals(result))
{
resultProcess(req, resp, "HTML", "");
return;
}
if ("json_RES".equals(result))
{
resultProcess(req, resp, "JSON", "");
return;
}
if ("velocity_RES".equals(result))
{
resultProcess(req, resp, "VELOCITY", "/WEB-INF/test.vm");
return;
}
throw new InvalidActionReturnValueException(result, MockServletAction.class, MockServletAction.class.getDeclaredMethod("execute", new Class[0]));
}
throw new InvalidRequestPathException(servletPath);
}
public void doPut(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
throw new InvalidRequestPathException(servletPath);
}
public void doDelete(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
throw new InvalidRequestPathException(servletPath);
}
public void doOptions(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
throw new InvalidRequestPathException(servletPath);
}
public void doTrace(HttpServletRequest req, HttpServletResponse resp)
throws Exception
{
req = new WheelHttpServletRequest(req);
resp = new WheelHttpServletResponse(resp);
String servletPath = req.getServletPath();
throw new InvalidRequestPathException(servletPath);
}
}
上面那个是我们将ResultSet转换成java对象的工具类的初始化方法。下面那个就是很重要的MVC请求转发的类了。在看看DAO吧
package jw.jwweb.mock.dao.impl;
import cn.wensiqun.wheel.db.template.MySQLTemplate;
import cn.wensiqun.wheel.exception.WheelRuntimeException;
import cn.wensiqun.wheel.util.Utils;
import cn.wensiqun.wheel.util.rs.ResultSetConverterContext;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.List;
import java.util.Properties;
import jw.jwweb.mock.dao.MockDao;
import jw.jwweb.mock.entity.User;
public class MockDaoImpl extends MySQLTemplate
implements MockDao
{
private static MockDaoImpl _instance@;
private static Properties $sqlMapper;
public void insertUser(User user)
{
}
public void deleteUser(User user)
{
}
public void updateUser(User user)
{
}
private List allUser@ByProxy()
throws Exception
{
PreparedStatement prepareStatement = null;
prepareStatement = getStatement(getSql("all.user"), new Object[0]);
ResultSet rs = prepareStatement.executeQuery();
return ResultSetConverterContext.convertToEntities(User.class, rs);
}
public List fuzzyQueryUser(User user)
{
return null;
}
static
{
try
{
$sqlMapper = Utils.getProperties("/jw/jwweb/mock/dao/impl/MockDaoImplSQL.properties");
Utils.processParameterName($sqlMapper);
}
catch (Throwable e)
{
throw new WheelRuntimeException(e);
}
}
public static MockDaoImpl _getInstance@()
{
return new MockDaoImpl();
}
protected String getSql(String key)
{
return $sqlMapper.get(key).toString();
}
public List allUser()
throws Exception
{
List localList = null;
try
{
localList = allUser@ByProxy();
}
finally
{
super.close();
}
return localList;
}
}
已经添加了获取sql配置文件的内容,并且初始化到$sqlMapper中;getSql方法也有内容了;同时将原先allUser的方法内容放到了allUser@ByProxy方法中,而allUser方法也添加了close方法。还有些自动生成的内容,大伙应该能看懂,下面接着进入service方法
package jw.jwweb.mock.service.impl;
import cn.wensiqun.wheel.annotation.DAO;
import cn.wensiqun.wheel.annotation.Singleton;
import cn.wensiqun.wheel.annotation.Transaction;
import cn.wensiqun.wheel.db.connection.DBConnection;
import cn.wensiqun.wheel.exception.WheelRuntimeException;
import java.io.PrintStream;
import java.util.List;
import jw.jwweb.mock.dao.MockDao;
import jw.jwweb.mock.dao.impl.MockDaoImpl;
import jw.jwweb.mock.entity.User;
import jw.jwweb.mock.service.MockService;
@Singleton
public class MockServiceImpl
implements MockService
{
@DAO
private MockDao mockDao;
private static MockServiceImpl _instance@;
private void &init&@ByProxy()
{
}
@Transaction
private List getUsers@ByProxy()
throws Exception
{
return this.mockDao.allUser();
}
@Transaction
private void addUser@ByProxy()
throws Exception
{
}
static
{
try
{
_instance@ = new MockServiceImpl();
}
catch (Throwable e)
{
throw new WheelRuntimeException(e);
}
}
public static MockServiceImpl _getInstance@()
{
return _instance@;
}
public MockServiceImpl()
{
try
{
this.mockDao = MockDaoImpl._getInstance@();
&init&@ByProxy();
}
catch (Throwable e)
{
throw new WheelRuntimeException(e);
}
}
public List getUsers()
throws Exception
{
List localList = null;
try
{
DBConnection.getInstance().startTransaction();
localList = getUsers@ByProxy();
}
finally
{
DBConnection.getInstance().endTransaction();
}
return localList;
}
public void addUser()
throws Exception
{
try
{
DBConnection.getInstance().startTransaction();
addUser@ByProxy();
}
finally
{
DBConnection.getInstance().endTransaction();
}
}
}
首先是在构造方法中,添加了代码:this.mockDao = MockDaoImpl._getInstance@();这个就是依赖注入了。getUsers中的方法也加入了事务, 最后一个是Action,这里面没什么花头,就不介绍了,反编译看看就可以了
来源:oschina
链接:https://my.oschina.net/u/238125/blog/169773