Java velocity模板引擎1.7换行问题

我有一个velocity模板，它生成了一个Java类，其中包含大量的换行符，但这种情况并不总是发生

我的模板看起来像这样

#foreach( $str in $elm.mylist )
#if($selected == $str.how)
#if($str.how == "value")
    //some comment
#end
#if($str.how == "value")
    //some comment
#end
#if($str.how == "value")
#if($foreach.index == 0 || $foreach.index == 1)
    @CustomAnnotation(value = "$!str.value")
#else
    //@CustomAnnotation(value = "$!str.value")
#end
#else
    @CustomAnnotation(value = "$!str.value")
#end
#end
#end

//some comment
//@CustomAnnotation(value = "sample value
")
//@CustomAnnotation(value = "no value found")
//@CustomAnnotation(value = "change this")
@CustomAnnotation(value = "no value found")
public MyClass varibleName;

//some comment
//@CustomAnnotation(value = "sample value
")
//@CustomAnnotation(value = "no value found")
//@CustomAnnotation(value = "change this")
@CustomAnnotation(value = "no value found")
public MyClass varibleName_1;

生成的java文件如下所示

#foreach( $str in $elm.mylist )
#if($selected == $str.how)
#if($str.how == "value")
    //some comment
#end
#if($str.how == "value")
    //some comment
#end
#if($str.how == "value")
#if($foreach.index == 0 || $foreach.index == 1)
    @CustomAnnotation(value = "$!str.value")
#else
    //@CustomAnnotation(value = "$!str.value")
#end
#else
    @CustomAnnotation(value = "$!str.value")
#end
#end
#end

//some comment
//@CustomAnnotation(value = "sample value
")
//@CustomAnnotation(value = "no value found")
//@CustomAnnotation(value = "change this")
@CustomAnnotation(value = "no value found")
public MyClass varibleName;

//some comment
//@CustomAnnotation(value = "sample value
")
//@CustomAnnotation(value = "no value found")
//@CustomAnnotation(value = "change this")
@CustomAnnotation(value = "no value found")
public MyClass varibleName_1;

---

如何避免这种新的换行？

在

示例值

之后的换行符肯定包含在

$str.value

字符串中。因此，您可以执行以下操作：

$!str.value.trim()

要移除它们

顺便说一句，如果您想消除Velocity指令引入的换行符，可以使用

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结束该行：