JFinal实现Blog管理的代码

如果需要下载demo项目、源码及详细文档请到: code.google.com/p/jfinal  并点击软件首页按钮


一：控制器(支持FreeMarker、JSP、Velocity、JSON等等以及自定义视图渲染)

@Before(BlogInterceptor.class)
public class BlogController extends Controller {
public void index() {
setAttr("blogList", Blog.dao.find("select * from blog order by id asc"));
}

public void add() {
}

@Before(BlogValidator.class)
public void save() {
getModel(Blog.class).save();
index();
}

public void edit() {
setAttr("blog", Blog.dao.findById(getParaToInt()));
}

@Before(BlogValidator.class)
public void update() {
getModel(Blog.class).update();
index();
}

public void delete() {
Blog.dao.deleteById(getParaToInt());
index();
}
}


2：Model(仅一行代码，无xml、无annotaion，其中new Blog()这行代码也可以删掉不是必须)
public class Blog extends Model<Blog> {
public static final Blog dao = new Blog();
}
3：Validator(API引导式校验，比xml校验方便N倍，并且有代码检查不易出错)

public class BlogValidator extends Validator {
protected void validate(Controller controller) {
validateRequiredString("blog.title", "titleMsg", "请输入Blog标题!");
validateRequiredString("blog.content", "contentMsg", "请输入Blog内容!");
}

protected void handleError(Controller controller) {
controller.keepModel(Blog.class);
String actionKey = getActionKey();
if (actionKey.equals("/blog/save"))
controller.render("add.html");
else if (actionKey.equals("/blog/update"))
controller.render("edit.html");
}
}
4：拦截器(在此demo中仅为示例，本demo不需要此拦截器)

public class BlogInterceptor implements Interceptor {
public void intercept(ActionInvocation ai) {
System.out.println("Before invoking " + ai.getActionKey());
ai.invoke();
System.out.println("After invoking " + ai.getActionKey());
}
}
如果需要下载demo项目、源码及详细文档请到: code.google.com/p/jfinal  并点击软件首页按钮