Java将字符串转换成可执⾏代码
1. 添加依赖
<dependency>
<groupId>org.apachemons</groupId>
<artifactId>commons-jexl3</artifactId>
<version>3.1</version>
</dependency>
2. 封装⽅法
private static JexlEngine jexlEngine = new Engine();
public static Object executeExpression(String jexlExpression, Map<String, Object> map) {
JexlExpression expression = ateExpression(jexlExpression);
JexlContext context = new MapContext();
if (Checker.isNotEmpty(map)) {
map.forEach(context::set);
}
return expression.evaluate(context);
}
3. 测试html代码转链接
@Test
public void testExecuteExpression() {
Map<String, Object> map = new HashMap<>();
map.put("alive", "coding every day");
map.put("out", System.out);
String expression = "out.print(alive)";
executeExpression(expression, map);
// uteExpression(expression, map);
}
// output：coding every day

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