我将nodejs模板引擎切换到ejs(来自jade).当我用我的ejs模板运行我的app.js时,我收到一系列“在视图中查找错误’错误”日志.

其中一些包括：

GET /css/bootstrap.min.css 500 12.588 ms - 1390
Error: Failed to lookup view "error" in views directory
...
GET /css/clean-blog.min.css
Error: Failed to lookup view "error" in views directory
...
GET /js/bootstrap.min.js
Error: Failed to lookup view "error" in views directory
...
GET /js/jquery.js
Error: Failed to lookup view "error" in views directory

事实上,许多这些依赖项都包含在模板本身中(通过脚本标记包含在内).什么是让它们在快递中工作的适当位置？似乎表达最终不应该在views文件夹中查找这些(因为它们不是视图).

确保您的Express App具有此设置,对于当前布局,您听起来就像这样.

// Require static assets from public folder
app.use(express.static(path.join(__dirname,'public')));

// Set 'views' directory for any views 
// being rendered res.render()
app.set('views',path.join(__dirname,'views'));

// Set view engine as EJS
app.engine('html',require('ejs').renderFile);
app.set('view engine','html');

将res.render()呈现的视图放置在应用程序顶层的“Views”目录中是很正常的.快速生成器实际上使用该视图设置.您可以通过修改以下行来更改它

// replace with the directory path below ./
app.set('views','views'));

我试图从Cassandra集群中获取元数据,密钥空间和表.我使用以下node.js代码：

var express = require('express');
var bodyParser = require('body-parser');
var cassandra = require('cassandra-driver');

var client = new cassandra.Client( { contactPoints : [ '127.0.0.1' ] } );
client.connect(function(err,result) {
    console.log('Connected To the Database.');
});

var app = express();
app.use(bodyParser.json());
app.set('json spaces',2);

app.get('/Metadata',function(req,res) {
    res.send(client.hosts.slice(0).map(function (node) {
        return { address : node.address,rack : node.rack,datacenter :     node.datacenter }
    }));
});



app.get('/Metadata/keyspaces',res) {
    client.execute("DESCRIBE KEYSPACES;",function(err,result) {
        if (err) {
            res.status(404).send(err);
        } else {
            res.json(result);        }
    });
});

app.get('/Metadata/tables',res) {
    client.execute("DESCRIBE TABLES",result) {
        if (err) {
            res.status(404).send({ msg : 'No Table found' });
        } else {
            res.json(result);        }
    });
});

var server = app.listen(3000,function() {
    console.log('Listening on port %d',server.address().port);
});

问题是,当我运行上面的代码时,我没有从数据库中获取现有的键空间或表,而是出现以下错误：

{
  "name": "ResponseError","message": "line 1:0 no viable alternative at input 'DESCRIBE'","info": "Represents an error message from the server","code": 8192,"query": "DESCRIBE KEYSPACES;"
}

我怎样才能看到这些信息？提前感谢您的帮助.

更新：

我刚才知道,DESCRIBE是一个cqlsh命令,所以我怎么能在我的情况下解决？

DESCRIBE是仅在cqlsh工具上可用的命令.

尝试查询系统表,如here所述.

我已经设法在RaspBerry Pi上设置了Jenkins实例,并且在我最终遇到这个绊脚石之前已经安装了NodeJS插件：

Started by an SCM change
Building in workspace /var/lib/jenkins/jobs/Test Project/workspace
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url localhost:/GITREPO/test # timeout=10
Fetching upstream changes from localhost:/GITREPO/test
 > git --version # timeout=10
 > git fetch --tags --progress localhost:/GITREPO/test +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 8e6edee9fdc1e8bf754dc1a27f46c1dea3531144 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 8e6edee9fdc1e8bf754dc1a27f46c1dea3531144
 > git rev-list 8eaf1bc6a0be837100e476b33bec559b33e9997f # timeout=10
[workspace] $/bin/sh -xe /tmp/hudson5445359267004163031.sh
+ echo /usr/local/bin/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
/usr/local/bin/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
+ node --version
v0.10.32
+ grunt --version
grunt-cli v0.1.13
+ java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) Client VM (build 25.0-b70,mixed mode)
[workspace] $/tmp/hudson1009495610900642950.js
FATAL: command execution Failed
java.io.IOException: Cannot run program "/tmp/hudson1009495610900642950.js" (in directory "/var/lib/jenkins/jobs/Test Project/workspace"): error=13,Permission denied
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1042)
    at hudson.Proc$LocalProc.<init>(Proc.java:244)
    at hudson.Proc$LocalProc.<init>(Proc.java:216)
    at hudson.Launcher$LocalLauncher.launch(Launcher.java:802)
    at jenkins.plugins.nodejs.tools.DecoratedLauncher.launch(DecoratedLauncher.java:49)
    at jenkins.plugins.nodejs.tools.NpmPackagesBuildWrapper$2.launch(NpmPackagesBuildWrapper.java:88)
    at hudson.Launcher$ProcStarter.start(Launcher.java:380)
    at hudson.Launcher$ProcStarter.join(Launcher.java:387)
    at jenkins.plugins.nodejs.NodeJsCommandInterpreter.perform(NodeJsCommandInterpreter.java:84)
    at jenkins.plugins.nodejs.NodeJsCommandInterpreter.perform(NodeJsCommandInterpreter.java:42)
    at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:770)
    at hudson.model.Build$BuildExecution.build(Build.java:199)
    at hudson.model.Build$BuildExecution.doRun(Build.java:160)
    at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:533)
    at hudson.model.Run.execute(Run.java:1745)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:89)
    at hudson.model.Executor.run(Executor.java:240)
Caused by: java.io.IOException: error=13,Permission denied
    at java.lang.UNIXProcess.forkAndExec(Native Method)
    at java.lang.UNIXProcess.<init>(UNIXProcess.java:187)
    at java.lang.ProcessImpl.start(ProcessImpl.java:134)
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1023)
    ... 18 more
Build step 'Execute NodeJS script' marked build as failure
Finished: FAILURE

我没有做任何特别特别的事情,这是确保NodeJS插件工作的初步测试：

var sys = require('sys');
sys.puts('NodeJS Test');
sys.puts('***********');
sys.puts('Hello World');

如果我以Jenkins用户身份登录并自行运行,则此方法有效：

jenkins@raspBerrypi:~$node test.js
NodeJS Test
***********
Hello World
jenkins@raspBerrypi:~$

我拖网上网,似乎找不到具体的东西;非常确定它不是专门的文件权限(Workspace目录具有对所有用户的完全访问权限)

我有同样的问题.对我来说,这是jenkins中“全局配置”下的nodejs插件配置.我的“节点”应用程序(符号链接)位于/usr/local/bin / node.我的“安装目录”设置为/usr/local/bin /.我也改变了/usr/local /它开始工作了！