图书信息库完整解决方案（六）豆瓣接口

为了综合当当和豆瓣的图书详情数据，这里在图书信息从当当抓取成功后，根据isbn信息再从豆瓣获取一次图书详情数据。

相关豆瓣图书的接口地址为：

https://developers.douban.com/wiki/?title=book_v2#get_isbn_book

然后将豆瓣与当当的图书详情进行比对，豆瓣如果存在对应的字段则以豆瓣的为准：

private boolean compareBookInfo(BookInfo srcInfo, BookInfo dstInfo){
        boolean update = false;
        
        //title
        if(!StringUtils.isEmpty(srcInfo.getTitle()) 
                && !srcInfo.getTitle().equalsIgnoreCase(dstInfo.getTitle())){
            dstInfo.setTitle(srcInfo.getTitle());
            update = true;
        }
        
        //subtitle
        if(!StringUtils.isEmpty(srcInfo.getSubtitle())
            && !srcInfo.getSubtitle().equalsIgnoreCase(dstInfo.getSubtitle())){
            dstInfo.setSubtitle(srcInfo.getSubtitle());
            update = true;
        }
        
        //image
        if(!StringUtils.isEmpty(srcInfo.getImage())
            && !srcInfo.getImage().equalsIgnoreCase(dstInfo.getImage())
            && ( StringUtils.isEmpty(dstInfo.getImage()) ||  dstInfo.getImage().contains("book-default"))
            ){
            dstInfo.setImage(srcInfo.getImage());
            update = true;
        }
        
        //author
        if(!StringUtils.isEmpty(srcInfo.getAuthor())
                && !srcInfo.getAuthor().equalsIgnoreCase(dstInfo.getAuthor())){
            dstInfo.setAuthor(srcInfo.getAuthor());
            update = true;
        }
        
        //author_info
        if(!StringUtils.isEmpty(srcInfo.getAuthor_intro())
                && !srcInfo.getAuthor_intro().equalsIgnoreCase(dstInfo.getAuthor_intro())){
            dstInfo.setAuthor_intro(srcInfo.getAuthor_intro());
            update = true;
        }

        //rating
        if(!StringUtils.isEmpty(srcInfo.getRating())
                && !srcInfo.getRating().equalsIgnoreCase(dstInfo.getRating())){
            dstInfo.setRating(srcInfo.getRating());
            update = true;
        }
        
        //price
        if(!StringUtils.isEmpty(srcInfo.getPrice())
                && StringUtils.isEmpty(dstInfo.getPrice())){
            dstInfo.setPrice(srcInfo.getPrice());
            update = true;
        }
        
        //tags
        if(!StringUtils.isEmpty(srcInfo.getTags())
                && !srcInfo.getTags().equalsIgnoreCase(dstInfo.getTags())){
            dstInfo.setTags(srcInfo.getTags());
            update = true;
        }
        
        //summary
        if(!StringUtils.isEmpty(srcInfo.getSummary())
                && !srcInfo.getSummary().equalsIgnoreCase(dstInfo.getSummary())){
            dstInfo.setSummary(srcInfo.getSummary());
            update = true;
        }
        
        //catalog
        if(!StringUtils.isEmpty(srcInfo.getCatalog())
                && !srcInfo.getCatalog().equalsIgnoreCase(dstInfo.getCatalog())){
            dstInfo.setCatalog(srcInfo.getCatalog());
            update = true;
        }
        
        return update;
    }

可以在这个基础上继续完善对豆瓣和当当的数据合并处理。