[英]Groovy sandbox and Java: execute Groovy script
Task: execute groovy script with Groovy sandbox: 任务:使用Groovy沙箱执行groovy脚本:
Groovy Script to execute: 要执行的Groovy脚本:
query.reverse(); // QUERY is a some string that should be reversed
File "GroovyScriptSandbox.groovy" should get two parameters(script and values for this script): 文件“ GroovyScriptSandbox.groovy”应获取两个参数(脚本和此脚本的值):
package test.my.groovy.sandbox
import org.codehaus.groovy.control.CompilerConfiguration
import org.codehaus.groovy.control.customizers.ImportCustomizer
import org.codehaus.groovy.control.customizers.SecureASTCustomizer
import org.springframework.stereotype.Component
@Component
class GroovyScriptSandbox {
def config
def shell
public String runScript(final String script, final String query) {
final ImportCustomizer imports = new ImportCustomizer()
.addStarImports('groovyx.net.http')
.addStaticStars('groovyx.net.http.ContentType', 'groovyx.net.http.Method')
config = new CompilerConfiguration()
config.addCompilationCustomizers(imports)
def newScript = "{ query -> " + script + "}"
shell = new GroovyShell(config)
def clos = shell.evaluate(newScript)
return clos.call(query)
}
}
Java method that executes "GroovyScriptSandbox.groovy": 执行“ GroovyScriptSandbox.groovy”的Java方法:
@Resource
private GroovyScriptSandbox groovyScriptSandbox;
@RequestMapping(value = "/run", method = RequestMethod.POST)
@ResponseBody
public String runScript(@RequestParam("script") final String script,
@RequestParam("query") final String query) {
return groovyScriptSandbox.runScript(script, query);
}
In that case all works fine: 在这种情况下,一切正常:
Question: I'm trying to replace "GroovyScriptSandbox.groovy" file with "GroovyScriptSandbox.java" and I don't know how to write the same groovy code in Java. 问题:我正在尝试将“ GroovyScriptSandbox.groovy”文件替换为“ GroovyScriptSandbox.java”,但我不知道如何在Java中编写相同的groovy代码。
Finally found solution: 终于找到解决方法:
public String scriptRunner(final String script, final String query) {
final ImportCustomizer imports = new ImportCustomizer();
imports.addStaticStars("java.lang.Math");
imports.addStarImports("groovyx.net.http");
imports.addStaticStars("groovyx.net.http.ContentType", "groovyx.net.http.Method");
final SecureASTCustomizer secure = new SecureASTCustomizer();
secure.setClosuresAllowed(true);
final CompilerConfiguration config = new CompilerConfiguration();
config.addCompilationCustomizers(imports, secure);
final Binding intBinding = new Binding(); // alow parameters in the script
intBinding.setVariable("query", query);
final GroovyShell shell = new GroovyShell(intBinding, config); // create shall
// code execution
final Object clos = shell.evaluate(script);
if (clos == null) {
return "No result avalible!";
}
return clos.toString();
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.