博客客户端(只支持Metaweblog API)核心功能实现(可以给cnblogs发送博客)

MetaweblogPoster用来给支持Metaweblog api的博客发送博客文章.目前只实现了获取博文分类和发送博客功能.

package com.leipei.blogutil;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;

public class MetaweblogPoster {

    private URL blogUrl;
    private XmlRpcClient blogClient;

    public MetaweblogPoster(URL blogUrl) {
        this.blogUrl = blogUrl;
        this.initBlogClient();
    }

    public URL getBlogUrl() {
        return blogUrl;
    }

    /*
     * 初始化博客发送客户端
     */
    private void initBlogClient() {
        if (this.blogUrl != null) {
            XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
            config.setServerURL(this.blogUrl);
            this.blogClient = new XmlRpcClient();
            blogClient.setConfig(config);
        }
    }

    /*
     * @name 发博文时需要的用户名
     *
     * @password 发博文时需要的密码
     *
     * @blogUrl 发博文时对应的metaweblog url
     *
     * @blog 要发送的博文对象,它存储了博文的标题,分类,标签,内容等信息
     */
    public String post(String name, String password, Blog blog) {
        try {

            // Set up parameters required by newPost method
            Map<String, Object> post = new HashMap<String, Object>();
            post.put("title", blog.getTitle());// 标题
            post.put("categories", blog.getCategory());// 分类
            post.put("description", blog.getContent());// 内容
            Object[] params = new Object[] { "default", name, password, post,
                    Boolean.TRUE };

            // 发布新博文
            String result = (String) this.blogClient.execute(
                    "metaWeblog.newPost", params);
            System.out.println(" Created with blogid " + result);
            return result;
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println(" UnCreated ");
            return "failed_post";
        }
    }

    /*
     * 此方法用于获取博客网站支持的日志分类,根据xml-rpc定义,获取回来的对象实际上是一个Object数组
     * 每个数组里面包含的是一个HashMap,这个HashMap中存储的是blogcategory的信息
     */
    public Object[] getCatogeryObj(String username, String password)
            throws MalformedURLException, XmlRpcException {
        Object[] params = new Object[] { "default", username, password };
        Object[] resultObj = (Object[]) this.blogClient.execute(
                "metaWeblog.getCategories", params);
        return resultObj;

    }

    /*
     * 打印博客支持的分类信息
     */
    public void printBlogCategory(Object[] blogCategory) {
        if (blogCategory != null) {
            System.out.println("开始打印博客支持的分类");
            for (Object blogCategoryItem : blogCategory) {
                printBlogCategoryItem((HashMap<String, String>) blogCategoryItem);
                System.out
                        .println("-------------------------------------------");
            }
        }
    }

    /*
     * 打印每个blogCategoryItem信息
     * 每个blogCategoryItem由categoryid,title,htmlUrl,description,rssUrl构成
     * 至少cnblogs的博客文章分类是如此
     */
    private void printBlogCategoryItem(HashMap<String, String> blogItem) {
        if (blogItem != null & blogItem.isEmpty() == false) {
            for (String key : blogItem.keySet()) {
                System.out.println(key + ":" + blogItem.get(key));
            }
        } else {
            System.out.println("blogItem is empty!");
        }

    }

    /*
     * 获取博客支持的所有博文分类名,返回的是一个String数组
     */
    public String[] getBlogCategoryTitle(Object[] blogCategory) {
        if (blogCategory != null) {
            ArrayList<String> categoryTitleList = new ArrayList<String>(20);
            for (Object categoryItem : blogCategory) {
                categoryTitleList.add((String) ((HashMap) categoryItem)
                        .get("title"));
            }
            return (String[]) categoryTitleList.toArray();
        }
        return null;
    }
}