获取两个html字符串之间的差异

Question

我想获得两个HTML字符串之间的差异（字符串被删除并添加了字符串）。 diff函数的功能必须给出如下结果：

String html1 = "<h1>foo foo </h1>"; 
String html2 = "<h1>foo baar </h1>"; 

private String diff(String html1, String html2){ 
... 
// diff method should return following: 
return "<h1>foo <span class = "deleted">foo</span> <span class = "added">baar </span> </h1>"; 
} 

我试过diff_match_patch，但它有html标记的问题。例如：

String html1 = "<ol><li>foo</li><li>baar</li></ol>" 
String html2 = "<ol><li>AA</li></ol>" 

diff_match_patch(html1, html2) gives the following diff string: 

<ol> 
<li>AA<del style="background:#ffe6e6;"></li> 
<li>BB</del> 
</li> 
</ol> 

它应该是：

<ol> 
<li>AA</li> 
<del style="background:#ffe6e6;"><li>BB</del> 
</li> 
</ol> 

Answer 1

即使你告诉他们的HTML字符串，对于Java它们就像任何其他正常String。

尝试

private String diff(String html1, String html2){ 

    // trim the string and null checks ..etc 
    if(html1.equalsIgnoreCase(html2)){ 

    // string are same 
    } 

    else { 
     // they are different. 
    } 


    }