BUpdate.java

package com.partynetwork.iparty.app.bean;

import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;

import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;

import com.partynetwork.iparty.app.AppException;
import com.partynetwork.iparty.app.util.StringUtils;

/**
 * 应用程序更新实体类
 * 
 * @author liux (http://my.oschina.net/liux)
 * @version 1.0
 * @created 2012-3-21
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class BUpdate implements Serializable {

	// 最新版本
	private String newVersion;
	// 最低支持版本
	private String lastVersion;
	// 版本显示
	private String versionName;
	// 发布日期
	private String releaseDate;
	// 升级日志
	private String changelog;
	// 下载地址
	private String downloadUrl;
	// 升级类型：0:BUG修复;1:功能改进;2:重大更新
	private int versionType;
	// 安装包文件名
	private String packageName;

	public String getNewVersion() {
		return newVersion;
	}

	public void setNewVersion(String newVersion) {
		this.newVersion = newVersion;
	}

	public String getLastVersion() {
		return lastVersion;
	}

	public void setLastVersion(String lastVersion) {
		this.lastVersion = lastVersion;
	}

	public String getVersionName() {
		return versionName;
	}

	public void setVersionName(String versionName) {
		this.versionName = versionName;
	}

	public String getReleaseDate() {
		return releaseDate;
	}

	public void setReleaseDate(String releaseDate) {
		this.releaseDate = releaseDate;
	}

	public String getChangelog() {
		return changelog;
	}

	public void setChangelog(String changelog) {
		this.changelog = changelog;
	}

	public String getDownloadUrl() {
		return downloadUrl;
	}

	public void setDownloadUrl(String downloadUrl) {
		this.downloadUrl = downloadUrl;
	}

	public int getVersionType() {
		return versionType;
	}

	public void setVersionType(int versionType) {
		this.versionType = versionType;
	}

	public String getPackageName() {
		return packageName;
	}

	public void setPackageName(String packageName) {
		this.packageName = packageName;
	}

	public static BUpdate parse(InputStream inputStream) throws AppException {
		BUpdate update = null;
		ObjectMapper om = new ObjectMapper();
		// om.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,
		// false);
		try {
			JsonNode treeNode = om.readTree(inputStream);
			int result = StringUtils.toInt(treeNode.path("result")
					.getValueAsText(), 0);
			if (result == 0) {
				// 失败
				String why = treeNode.path("description").getValueAsText();
				throw AppException.fail(why);
			} else if (result == 1) {
				// 成功
				JsonNode dataNode = treeNode.path("details");
				update = om.readValue(dataNode.toString(), BUpdate.class);
			} else {
				throw AppException.fail("接口异常");
			}
		} catch (JsonParseException e) {
			throw AppException.json(e);
		} catch (JsonMappingException e) {
			throw AppException.json(e);
		} catch (IOException e) {
			throw AppException.io(e);
		}
		return update;
	}
}