Gson解析

/**
 * 流的工具类
 * @author rookie
 *
 */
public class StreamTools {

    /**
     * 输入流转成字符串
     * @param is
     * @return
     */
    public static String readFromFile(InputStream is){
        
        
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            
            byte[] buffer = new byte[1024];
            
            int len = 0;
            
            while((len = is.read(buffer)) != -1){
                baos.write(buffer, 0, len);
            }
            return baos.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return null;
        
        
    }
    
    
    
    
    
}

public void btnGsonResolver(View v){
        
        
        try {
            InputStream is = getAssets().open("simple2.txt");
            String json = StreamTools.readFromFile(is);
            //创建一个gson对象
            Gson gson = new Gson();
            //Json -> JavaBean
            Person person = gson.fromJson(json, Person.class);    
            List<HomeInfo> homeinfo = person.getHomeinfo();    
        } catch (Exception e) {
            e.printStackTrace();
        }    
    }