JavaScriptEngine
https://mvnrepository.com/artifact/org.openjdk.nashorn/nashorn-core
https://github.com/ajaxorg/ace
Last active
June 21, 2024 10:18
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Ace.js 格式化代码 & Java ScriptEngine
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| data class EvalDTO(var script: String) |
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| data class Keyword( | |
| val name: String, | |
| val value: String, | |
| val caption: String, | |
| val meta: String = "variable", | |
| val type: String = "variable", | |
| val docTooltip: String = "Inner Variable", | |
| ) |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Script</title> | |
| <style> | |
| .content { | |
| margin: 2em 4em 0 4em; | |
| height: 100%; | |
| } | |
| #editor { | |
| min-width: 50em; | |
| min-height: 40em; | |
| border: chocolate 1px solid; | |
| } | |
| .error { | |
| color: orangered; | |
| display: none; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="content"> | |
| <div id="editor"></div> | |
| <p>Result: <span id="result"></span></p> | |
| <p class="error"></p> | |
| <button id="eval">SUBMIT</button> | |
| </div> | |
| <script src="/static/jquery.3.7.1.js"></script> | |
| <script src="/static/ace/src/ace.js"></script> | |
| <script src="/static/ace/src/ext-language_tools.js"></script> | |
| <script> | |
| const editor = ace.edit('editor') | |
| function init() { | |
| editor.session.setMode('ace/mode/javascript') | |
| editor.setOptions({ | |
| enableBasicAutocompletion: true, | |
| enableSnippets: true, | |
| enableLiveAutocompletion: true, | |
| }) | |
| editor.setTheme('ace/theme/github') | |
| } | |
| function initExtLanguage() { | |
| $.get('/script/keywordList', function (data) { | |
| addExtKeyWord(data) | |
| }) | |
| } | |
| function addExtKeyWord(keyWorldList) { | |
| const languageTools = ace.require("ace/ext/language_tools"); | |
| languageTools.addCompleter({ | |
| getCompletions: function (editor, session, pos, prefix, callback) { | |
| callback(null, keyWorldList); | |
| } | |
| }); | |
| } | |
| function evalScript() { | |
| const script = editor.getValue() | |
| const error = $('.error') | |
| $.ajax('/script/eval', { | |
| type: 'POST', | |
| data: JSON.stringify({'script': script}), | |
| contentType: 'application/json;charset=utf-8', | |
| success: function (data) { | |
| $('#result').text(data) | |
| error.hide() | |
| }, | |
| error: function (data) { | |
| error.text(data.responseJSON.message) | |
| error.show() | |
| } | |
| }) | |
| } | |
| $(document).ready(function () { | |
| init() | |
| initExtLanguage() | |
| // | |
| $('#eval').click(function () { | |
| evalScript() | |
| }) | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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| import org.slf4j.LoggerFactory | |
| import org.springframework.stereotype.Controller | |
| import org.springframework.web.bind.annotation.* | |
| import javax.script.ScriptEngine | |
| import javax.script.ScriptEngineManager | |
| import javax.script.SimpleBindings | |
| /** | |
| * @author lpe234 | |
| * @since 2024/6/21 13:51 | |
| */ | |
| @Controller | |
| @RequestMapping("script") | |
| class ScriptController { | |
| private val logger = LoggerFactory.getLogger(ScriptController::class.java) | |
| private lateinit var engine: ScriptEngine | |
| private val PARAMS = mapOf(Pair("a", 10), Pair("b", 20)); | |
| init { | |
| val manager = ScriptEngineManager() | |
| engine = manager.getEngineByName("nashorn") | |
| } | |
| @GetMapping | |
| fun index(): String { | |
| return "script" | |
| } | |
| @ResponseBody | |
| @GetMapping("keywordList") | |
| fun keywords(): List<Keyword> { | |
| val wordList = PARAMS.keys.map { | |
| Keyword(it, it, it) | |
| }.toMutableList() | |
| // | |
| wordList.add(Keyword("logger", "logger", "logger", "object", "object")) | |
| // | |
| return wordList | |
| } | |
| @ResponseBody | |
| @PostMapping("eval") | |
| fun eval(@RequestBody dto: EvalDTO): Any { | |
| val bindings = SimpleBindings() | |
| bindings["logger"] = logger | |
| // | |
| PARAMS.entries.forEach { | |
| bindings[it.key] = it.value | |
| } | |
| // | |
| return engine.eval(dto.script, bindings) | |
| } | |
| } |
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