我想创建一个 XML 文件，用于存储 Java 程序的结构。我能够成功解析 Java 程序并根据需要创建标签。当我尝试将源代码包含在标签中时，问题就出现了，因为 Java 源代码可能使用大量实体引用和保留字符，例如 &、< ,> , &。我无法创建有效的 XML。
我的 XML 应该像这样：
<?xml version="1.0"?>
<prg name="prg_name">
<class name= "class_name>
<parent>parent class</parent>
<interface>Interface name</interface>
.
.
.
<method name= "method_name">
<statement>the ordinary java statement</statement>
<if condition="Conditional Expression">
<statement> true statements </statement>
</if>
<else>
<statement> false statements </statement>
</else>
<statement> usual control statements </statement>
.
.
.
</method>
</class>
.
.
.
</prg>
像这样，但问题是 if 的条件表达式或其他语句中有很多 & 或其他保留符号，这会阻止 XML从得到验证。由于所有这些数据（源代码）都是由用户提供的，我对其几乎无法控制。逃离角色会花费非常多的时间。
我可以使用 CDATA 转义元素文本，但它不能用于包含条件表达式的属性值。我正在使用 Antlr Java 语法来解析 Java 程序并获取标签的属性和内容。那么还有其他解决方法吗？
I want to create an XML file which will be used to store the structure of a Java program. I am able to successfully parse the Java program and create the tags as required. The problem arises when I try to include the source code inside my tags, since Java source code may use a vast number of entity reference and reserved characters like &, < ,> , &. I am not able to create a valid XML.
My XML should go like this:
<?xml version="1.0"?>
<prg name="prg_name">
<class name= "class_name>
<parent>parent class</parent>
<interface>Interface name</interface>
.
.
.
<method name= "method_name">
<statement>the ordinary java statement</statement>
<if condition="Conditional Expression">
<statement> true statements </statement>
</if>
<else>
<statement> false statements </statement>
</else>
<statement> usual control statements </statement>
.
.
.
</method>
</class>
.
.
.
</prg>
Like this, but the problem is conditional expressions of if or other statements have a lot of & or other reserved symbols in them which prevents XML from getting validated. Since all this data (source code) is given by the user I have little control over it. Escaping the characters will be very costly in terms of time.
I can use CDATA to escape the element text but it can not be used for attribute values containing conditional expressions. I am using Antlr Java grammar to parse the Java program and getting the attributes and content for the tags. So is there any other workaround for it?
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评论（2）
你将不得不转义
为 xml。
You will have to escape
for xml.
必须进行转义
在 XML 属性中，如果将属性值括在双引号 (
") 中，则，例如，表示带有属性
attr的标签MyTag和文本如果 a - 注意：不需要使用'来转义'字符如果将属性值括在单引号 (
') 中，则应转义这些字符：并且可以按原样编写
"。属性文本中的
>与>的转义不是必需的，例如"/ > In XML attributes you must escape
if you wrap attribute values in double quotes (
"), e.g.meaning tag
MyTagwith attributeattrwith textIf a<b & b<c then a<c, it's obvious- note: no need to use'to escape'character.If you wrap attribute values in single quotes (
') then you should escape these characters:and you can write
"as is.Escaping of
>with>in attribute text is not required, e.g.<a b=">"/>is well-formed XML.