本人小菜一枚，表达能力也不是很好，哪里写了不好的地方请大神评论下。
首先写Controller对映的注解，这里我将其命名为C
这个注解现在比较简单些
net.zz.annotation;
java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Documented
@C {
String value();
}首先写Model对映的注解，这里我将其命名为M这个注解现在也是比较简单些，呵呵！
net.zz.annotation;
java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Documented
@M
{
String value() ;String id() ;
}注解写好了，接下来得写一个对类的扫描器.这里我写了也比较简单，主要只是为了实现这个Demo
net.zz.plugin;
javax.servlet.http.HttpServletRequest;
java.io.File;
java.io.FileFilter;
java.io.IOException;
java.net.JarURLConnection;
java.net.URL;
java.net.URLDecoder;
java.util.Enumeration;
java.util.LinkedHashSet;
java.util.Set;
java.util.jar.JarEntry;
java.util.jar.JarFile;
Scan {
HttpServletRequest request;
Scan() {
}
Scan(HttpServletRequest request) {
.request = request;
}
Set<Class<?>> getClasses(String pack) {
Set<Class<?>> classes = LinkedHashSet<Class<?>>();
recursive = ;
String packageName = pack;
String packageDirName = packageName.replace(, );
Enumeration<URL> dirs;
{
dirs = Thread.currentThread().getContextClassLoader().getResources(
packageDirName);
(dirs.hasMoreElements()) {
URL url = dirs.nextElement();
String protocol = url.getProtocol();
(.equals(protocol)) {
String filePath = URLDecoder.decode(url.getFile(), );
findAndAddClassesInPackageByFile(packageName, filePath, recursive, classes);
} (.equals(protocol)) {
JarFile jar;
{
jar = ((JarURLConnection) url.openConnection())
.getJarFile();
Enumeration<JarEntry> entries = jar.entries();
(entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
String name = entry.getName();
(name.charAt() == ) {
name = name.substring();
}
(name.startsWith(packageDirName)) {
idx = name.lastIndexOf();
(idx != -) {
packageName = name.substring(, idx)
.replace(, );
}
((idx != -) || recursive) {
(name.endsWith()
&& !entry.isDirectory()) {
String className = name.substring(
packageName.length() + , name
.length() - );
{
classes.add(Class
.forName(packageName + + className));
} (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
}
}
} (IOException e) {
e.printStackTrace();
}
}
}
} (IOException e) {
e.printStackTrace();
}
classes;
}
findAndAddClassesInPackageByFile(String packageName,
String packagePath, recursive, Set<Class<?>> classes) {
File dir = File(packagePath);
(!dir.exists() || !dir.isDirectory()) {
;
}
File[] dirfiles = dir.listFiles(FileFilter() {
accept(File file) {
(recursive && file.isDirectory())
|| (file.getName().endsWith());
}
});
(File file : dirfiles) {
(file.isDirectory()) {
findAndAddClassesInPackageByFile(packageName + + file.getName(), file.getAbsolutePath(), recursive,
classes);
} {
String className = file.getName().substring(,
file.getName().length() - );
{
Class<?> cls=Thread.currentThread().getContextClassLoader().loadClass(packageName + + className);
classes.add(cls);
} (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
}
getName(String path) {
File file = File(path);
(file.isDirectory()) {
File[] dirFile = file.listFiles();
(File f : dirFile) {
(f.isDirectory())
getName(f.getAbsolutePath());
{
(f.getName().endsWith())
System.out.println(f.getAbsolutePath());
}
}
}
}
}这个简单的扫描起就这样写完了，接下来就是最重要的JFinal配置的部分，实现注解处理适配的部分
编写一个抽象类JFinalConfig，这个配置类跟之前写的差不多，我们继承com.jfinal.config.JFinalConfig这个类，并实现下面这几个方法
public void configRoute(Routes me) public void configPlugin(Plugins me) 编写三个抽象方法
controlSscan(List<String> controlPackage);
componentSscan(List<String> basePackage);
IDataSourceProvider setDataSource ();controlSscan方法主要用于设置controller的扫描，componentSscan也是一样的意思。setDataSource 这个方法配置数据源。接下来一个是用于开发者进行需要时覆盖的方法,用于活动记录的插件添加addActiveRecord(ActiveRecordPlugin arp){}下面是对应的具体代码。net.zz.config;
com.jfinal.config.*;
com.jfinal.core.Controller;
com.jfinal.plugin.IPlugin;
com.jfinal.plugin.activerecord.ActiveRecordPlugin;
com.jfinal.plugin.activerecord.IDataSourceProvider;
com.jfinal.plugin.activerecord.Model;
com.jfinal.plugin.c3p0.C3p0Plugin;
net.zz.annotation.C;
net.zz.annotation.M;
net.zz.plugin.Scan;
java.util.ArrayList;
java.util.List;
java.util.Set;
JFinalConfig com.jfinal.config.JFinalConfig{
List<String> controlPackage = ArrayList<String>();
List<String> basePackage = ArrayList<String>();
controlSscan(List<String> controlPackage);
componentSscan(List<String> basePackage);
IDataSourceProvider setDataSource (showSql);
@Override
configRoute(Routes me) {
controlSscan(controlPackage);Scan driven = Scan();
(String pake : controlPackage){
Set<Class<?>> clazzs = driven.getClasses(pake);
(Class<?> clazz : clazzs) {
System.out.println(clazz.getName());
(clazz.isAssignableFrom(com.jfinal.core.Controller.)) {
C con = clazz.getAnnotation(C.);
(!= con) {
me.add(con.value(), (Class<? Controller>) clazz);
}
}
}
}
}
@Override
configPlugin(Plugins me) {
componentSscan(basePackage);
IDataSourceProvider iDataSourceProvider = setDataSource();
{
me.add((IPlugin) iDataSourceProvider);
}(Exception e){
RuntimeException();
}
ActiveRecordPlugin arp = ActiveRecordPlugin(iDataSourceProvider);
addActiveRecord(arp); Scan driven = Scan();
(String pake : controlPackage){
Set<Class<?>> clazzs = driven.getClasses(pake);
(Class<?> clazz : clazzs) {
System.out.println(clazz.getName());
(clazz.isAssignableFrom(com.jfinal.plugin.activerecord.Model.)) {
M model = clazz.getAnnotation(M.);
(!= model) {
arp.addMapping(model.value(), model.id(), (Class<? Model<?>>) clazz);
}
}
}
}
me.add(arp);
}
addActiveRecord(ActiveRecordPlugin arp){ // arp.setShowSql(true);//设置是sql显示开关
}
}接下来是简单实现Config配置的例子
package net.zz.config;
import com.jfinal.plugin.activerecord.IDataSourceProvider;
import net.mzzo.inter.JsonCrossDomain;
import net.mzzo.inter.Login;
import com.jfinal.config.Constants;
import com.jfinal.config.Handlers;
import com.jfinal.config.Interceptors;
import com.jfinal.plugin.c3p0.C3p0Plugin;
import net.zz.config.JFinalConfig;
import java.util.List;
public class ZZConfig extends JFinalConfig {
public void configConstant(Constants me) {
loadPropertyFile("config.properties");
me.setDevMode(getPropertyToBoolean("devMode", false));
}
public void configHandler(Handlers me) {
}
@Override
public void controlSscan(List<String> list) {
list.add("net.zz.controler");
list.add("net.zz.util");
}
@Override
public void componentSscan(List<String> list) {
list.add("net.mzzo.model");
}
@Override
public IDataSourceProvider setDataSource() {
showSql = true;
C3p0Plugin c3p0Plugin = new C3p0Plugin(getProperty("jdbcUrl"), getProperty("user"), getProperty("password"), getProperty("driverClass"), getPropertyToInt("maxPoolSize"), getPropertyToInt("minPoolSize"), getPropertyToInt("initialPoolSize"), getPropertyToInt("maxIdleTime"), getPropertyToInt("acquireIncrement"));
return c3p0Plugin;
}
public void configInterceptor(Interceptors me) {
me.add(new JsonCrossDomain());
me.add(new Login());
}
}//接下来就是Controller的例子
@C("/users")
public class UsersControl extends Controller {
}下面就是Model的例子
@M("users")
public class Users extends Model<Users> {
}
再次说下表达不是很好。
接下来的想法是将JFinal的Model部分稍微包装一下，github地址:https://github.com/cnzzs/zjf本文出自 “7031393” 博客，请务必保留此出处http://7041393.blog.51cto.com/7031393/1680314
简单实现JFinal注解配置Controller,Model
原文地址：http://7041393.blog.51cto.com/7031393/1680314
