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Handler.java
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package Web;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.HashMap;
/**
*
* @author Ma
*/
public class Handler {
public Request request;
/**
* 初始化Handler
*/
public void init(Request request) {
this.request = request;
}
/**
* 用于实现一些类似构造方法的作用
* @todo 装饰器实现
*/
public void construct() {
;
}
/**
* 获取参数
* @param key
* @return
*/
public Object getArgument(String key){
return this.request.Arguments.get(key);
}
/**
* 把模版或者字符串写入
* @param s
*/
public void writer(String s) {
Response.setContent(s);
}
/**
* 读取模版
*/
public BaseTemplate render(String fileName) {
try {
BaseTemplate object;
if (Options.DEBUG) {
fileName = fileName.replace(".", "/");//把点替换成路径
TplCompile tplCompile = new TplCompile();
object = (BaseTemplate) tplCompile.run(fileName + ".html");
if (object == null) {
InternalServerError500.set500(fileName + "模版不存在!");
}
} else {
Class TemplateClass = Class.forName("Template." + fileName + "Template");
object = (BaseTemplate) TemplateClass.newInstance();
}
return object;
} catch (ClassNotFoundException ex) {
//模版不存在
InternalServerError500.set500(fileName + "模版不存在!");
Logger.getLogger(Handler.class.getName()).log(Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
Logger.getLogger(Handler.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
Logger.getLogger(Handler.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
/**
* 重定向到URL，发送303
*
* @param url
*/
public void redirect(String url) {
Response.setStatus(303);
if (url.toLowerCase().indexOf("http://") < 0) {
url = "http://" + this.request.Header.get("Host") + url;
}
Response.header("Location: " + url);
}
/**
* 页面跳转到URL中，通过HTML
*
* @param url
* @param time
*/
public void jump(String message, String url, int time, boolean status) {
boolean isSetUrl = false;
if (message == null) {
message = "Message!";
}
if (time < 1) {
time = 3;
}
if ("XMLHttpRequest".equals(this.request.Header.get("X-Requested-With"))) {
//判断Ajax请求
HashMap map = new HashMap();
map.put("static", status);
map.put("data", message);
Response.setContentType(Response.findContentType("json"));
this.writer(Json.encode(map));
} else {
BaseTemplate jump = this.render("jump");
jump.assign("status", status);
jump.assign("message", message);
if (url != null) {
isSetUrl = true;
}
jump.assign("isSetUrl", isSetUrl);
jump.assign("url", url);
jump.assign("wait", time);
this.writer(jump.display());
}
}
/**
* 操作成功
*/
public void success(String message, String url, int time) {
if (message == null) {
message = "Success!";
}
this.jump(message, url, time, true);
}
/**
* 操作成功
*/
public void success(String message, String url) {
this.success(message, url, 0);
}
/**
* 操作成功
*/
public void success(String message) {
this.success(message, null, 0);
}
/**
* 操作错误
*/
public void error(String message, String url, int time) {
if (message == null) {
message = "Error!";
}
this.jump(message, url, time, false);
}
/**
* 操作错误
*/
public void error(String message, String url) {
this.error(message, url, 0);
}
/**
* 操作错误
*/
public void error(String message) {
this.error(message, null, 0);
}
}