小编Lin*_*ill的帖子

我已经在ini文件中给了eclipse大量的内存,但它仍然没有使用任何超过300mb的东西,我可以在任务管理器中看到.

  [javac] The system is out of resources.
    [javac] Consult the following stack trace for details.
    [javac] java.lang.OutOfMemoryError: Java heap space
    [javac]     at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:1938)
    [javac]     at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:1835)
    [javac]     at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1522)
    [javac]     at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:360)
    [javac]     at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:377)
    [javac]     at com.sun.tools.javac.comp.Annotate.enterAttributeValue(Annotate.java:190)
    [javac]     at com.sun.tools.javac.comp.Annotate.enterAnnotation(Annotate.java:167)
    [javac]     at com.sun.tools.javac.comp.MemberEnter.enterAnnotations(MemberEnter.java:743)
    [javac]     at com.sun.tools.javac.comp.MemberEnter.access$300(MemberEnter.java:42)
    [javac]     at com.sun.tools.javac.comp.MemberEnter$5.enterAnnotation(MemberEnter.java:711)
    [javac]     at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:95)
    [javac]     at com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:87)
    [javac]     at com.sun.tools.javac.comp.Enter.complete(Enter.java:485)
    [javac]     at com.sun.tools.javac.comp.Enter.main(Enter.java:442)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:819)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:727)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:353)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:279)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:270)
    [javac]     at …

Exception in thread "main" java.lang.IllegalArgumentException: Fetcher: No agents listed in 'http.agent.name' property.
        at org.apache.nutch.fetcher.Fetcher.checkConfiguration(Fetcher.java:1166)
        at org.apache.nutch.fetcher.Fetcher.fetch(Fetcher.java:1068)
        at org.apache.nutch.crawl.Crawl.run(Crawl.java:135)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.nutch.crawl.Crawl.main(Crawl.java:54)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)

每次我跑./nutch crawl urls -dir crawl -depth 3 -topN 5.nutch决定抛出这个错误.我有我的nutch-site.xml和nutch-default.xml设置.

 <property>
  <name>http.agent.name</name>
  <value>blah</value>
  </property>

进行了描述,使其更容易阅读.但我没有看到可以指定代理名称的其他位置.如果有人有任何建议我会很感激.

from django.db import models
import os
from django.db.models.signals import post_save
import sys

class Form(models.Model):
    site = models.CharField(max_length=50)
    num = models.CharField(max_length=10)
    octet = models.CharField(max_length=30)

    def __unicode__(self):
        return self.site
        return self.num
        return self.octet

def create_conf(sender, **kwargs):
    os.system("/usr/local/build " + self.site + ' ' + self.num + ' ' + self.octet)

post_save.connect(create_conf, sender=Form)

试图让我的django Web应用程序执行带参数的python命令行应用程序.不确定这是否是绕过它的最好方法？如果没有任何建议会很好.尝试通过Web表单从用户获取输入,并将其用作执行cmd应用程序的参数.

帮助太棒了

谢谢威廉

我想要做的是当我输入一个特定的参数时它启动一个函数,这是可能的argparse.因此,如果我在我的应用程序中点击add参数,它会触发"添加"功能.

parser = argparse.ArgumentParser(description='to do list')
parser.add_argument('-a', '--add', help='add an item to the todo list')
parser.add_argument('-r', '--remove',)
parser.add_argument('-l', '--list',)
args = parser.parse_args()

def add(args):
    conn = sqlite3.connect('todo.db')
    c = conn.cursor()
    c.execute("INSERT INTO todo VALUES (args.add, timestamp)")