Java/Velocity/If
Содержание
If and elseif
<source lang="java">
import java.io.StringWriter; import java.io.Writer; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.Velocity; import org.apache.velocity.tools.generic.RenderTool; public class VMDemo {
public static void main(String[] args) throws Exception {
Velocity.init();
Template t = Velocity.getTemplate("./src/VMDemo.vm");
VelocityContext ctx = new VelocityContext();
Writer writer = new StringWriter();
t.merge(ctx, writer);
System.out.println(writer);
}
}
- set ($companyName = "Name")
<html>
<head> <title>$companyName Homepage</title> </head> <body>
Welcome!!
#if ($userType == "Type 1")
You are Type 1!
#elseif ($userType == "Type 2")
You are an Type 2.
#elseif ($userType == "Type 3")
You are an Type 3!
#else
I don"t know what you are!
#end </body>
</html>
</source>
If Else and End
<source lang="java">
import java.io.StringWriter; import java.io.Writer; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.Velocity; import org.apache.velocity.tools.generic.RenderTool; public class VMDemo {
public static void main(String[] args) throws Exception {
Velocity.init();
Template t = Velocity.getTemplate("./src/VMDemo.vm");
VelocityContext ctx = new VelocityContext();
Writer writer = new StringWriter();
t.merge(ctx, writer);
System.out.println(writer);
}
}
- set ($companyName = "Name")
<html>
<head> <title>$companyName Homepage</title> </head> <body>
Welcome!!
#if ($userType == "VIP")
You are a VIP!
#else
You are not a VIP!
#end </body>
</html>
</source>
If statement inside a for loop
<source lang="java">
import java.io.StringWriter; import java.io.Writer; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.Velocity; import org.apache.velocity.tools.generic.RenderTool; public class VMDemo {
public static void main(String[] args) throws Exception {
Velocity.init();
Template t = Velocity.getTemplate("./src/VMDemo.vm");
VelocityContext ctx = new VelocityContext();
Writer writer = new StringWriter();
t.merge(ctx, writer);
System.out.println(writer);
}
}
<html>
<head>
<title>Gimli"s Widgetarium</title>
</head>
<body>
| $product | $product |
</body>
</html>
</source>
Use if in velocity
<source lang="java">
import java.io.StringWriter; import java.io.Writer; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.Velocity; import org.apache.velocity.tools.generic.IteratorTool; public class IteratorToolExample {
public static void main(String[] args) throws Exception {
Velocity.init();
Template t = Velocity.getTemplate("./src/iteratorTool.vm");
VelocityContext ctx = new VelocityContext();
ctx.put("var", new IteratorTool());
Writer writer = new StringWriter();
t.merge(ctx, writer);
System.out.println(writer);
}
}
- set($list = ["A", "B", "C", "D", "E"])
- foreach($item in $list)
#if($velocityCount <= 3)
$item
#end
- end
</source>
