鉴于我将Spring bean配置为
@Service("myService")
public class DefaultService extends MyService {
}
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和一个使用这个bean的类
public class Consumer {
@Autowired
@Qualifier("myService")
private MyService service;
...
}
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我现在希望我的项目(包括前面的类)有Consumer另一个MyService被注入的实现.因此我想覆盖beanmyService
@Service("myService")
public class SpecializedService implements MyService {
}
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导致Consumer现在携带一个SpecializedService而不是DefaultService.根据定义,我不能在Spring容器中有两个具有相同名称的bean.我怎么能告诉spring,新服务的定义是否会覆盖旧服务?我不想修改这个Consumer类.
我在codeigniter中上传图片,效果很好.但是当我尝试更新图像时,codeigniter会在每个图像的末尾自动添加1.这将在我的images目录中添加未使用的图像.如何覆盖现有图像而不是为其命名并保存?
我使用ggplot和facet_grid,我想在每个方面指出每个方面的观察数量.我按照许多网站上提供的示例进行操作,但是当我将其写入任何内容时,它会在所有四个图上将所有四个观察数字叠加在一起.
这里是geom_text图层命令:geom_text(data = ldata,aes(x = xpos,y = ypos,label = lab,size = 1),group = NULL,hjust = 0,parse = FALSE)
和ldata是一个数据框,列出了每个图上的坐标(xpos,ypos)和观察数(实验室).它在图上的正确位置打印数字,但所有四个都在所有四个图上相互重叠.我无法弄清楚我做错了什么.
LDATA:
xpos ypos实验室
1 10 1.35 378
2 10 1.35 2
3 10 1.35 50
4 10 1.35 26
我对Visual Studio有一点小麻烦.在Visual Studio的右下角,有一个INS/OVR按钮可以切换插入/覆盖.我总是将此按钮设置为INS,我总是希望将其设置为INS.
但是,有时当我构建解决方案时,Visual Studio会将其更改回OVR.我必须单击按钮将其更改回INS,这有点不方便.
我不知道为什么这个设置有时会改变.无论如何我可以永久禁用Visual Studio中的覆盖模式或阻止解决方案构建更改此设置吗?
我正在制作一个Android应用程序,需要能够将文件推送到服务器上.
为此,我正在使用POST,fopen/fwrite但此方法仅附加到文件并unlink在写入文件之前使用无效.(file_put_contents具有完全相同的效果)
这就是我到目前为止所拥有的
<?php
$fileContent = $_POST['filecontent'];
$relativePath = "/DatabaseFiles/SavedToDoLists/".$_POST['filename'];
$savePath = $_SERVER["DOCUMENT_ROOT"].$relativePath;
unlink($savePath);
$file = fopen($savePath,"w");
fwrite($file,$fileContent);
fclose($file);
?>
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当我不尝试写入文件时,该文件将正确删除它自己,但如果我尝试写入它,它将附加.
有人有任何关于覆盖文件内容的建议吗?
谢谢,卢克.
我在运行以下代码时遇到了一些问题.我得到了这个:错误C2668:'pow':对重载函数的模糊调用.我试图使用static_cast手动将参数转换为适当的类型,但是我想我得到一些指针错误?!
该程序应将数字从基数16转换为基数10.
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>
#include <math.h>
//base 16 to base 10
int convert(char *n){
int result = 0;
for (int i = strlen(n) - 1; i >= 0; i--){
if (n[i] >= 'a')
result += (n[i] - 'a' + 10)* pow(16, strlen(n) - i - 1);
else
if (n[i] >= 'A')
result += (n[i] - 'A' + 10)* pow(16, strlen(n) - i - 1);
else
if (n[i] >= '0')
result += (n[i] …Run Code Online (Sandbox Code Playgroud) 我想覆盖之前保存的文件,我的SaveAs代码:
public void SaveAs(){
judul = jTextJudul.getText();
s = area.getText();
if(s.length()>0){//jika s terisi
try {
dialog = new FileDialog(this,"Save File As",FileDialog.SAVE);
dialog.setFile(judul+".txt");
dialog.setVisible(true);
path=dialog.getDirectory()+dialog.getFile();
FileOutputStream fos=new FileOutputStream(path);
System.out.println(s);
byte[] b=s.getBytes();
fos.write(b);
fos.close();
setTitle(name);
}
catch(Exception e){
JOptionPane.showMessageDialog(this,e.getMessage());
}
}
else{
JOptionPane.showMessageDialog(this,"Apa anda yakin menyimpan file kosong?");
}
}
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而我的保存代码(必须覆盖存在的文件)
public void Save(){
dialog = new FileDialog(this,"Save",FileDialog.SAVE);
file = new File(path+".txt");
s = area.getText();
try{
// Create file
FileWriter fstream = new FileWriter(file,true);
BufferedWriter out = new BufferedWriter(fstream);
out.write(s);
//Close the …Run Code Online (Sandbox Code Playgroud) 我需要有几个对象,每个对象都有一个单独的数组。我写了这段代码:
read_values = list()
for read_unit in read_units:
read_value = ReadValues.objects.all().filter(ReadID=read_unit.ReadID)
element = TempObjectForReadValues()
for read_element in read_value:
element.read_elements[read_element.Code] = read_element.ReadValue
read_values.append(element)
print(element.read_elements)
print(' ')
for test_element in read_values:
print(test_element.read_elements)
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这就是我定义该类的方式:
class TempObjectForReadValues():
read_elements = [None] * 10
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结果是:
[None, None, 16.0, None, 189.0, 345.0, None, None, None, None]
[None, None, 16.0, 43.0, 876.0, 345.0, None, None, None, None]
[None, None, 16.0, 43.0, 876.0, 345.0, None, None, None, None]
[None, None, 16.0, 43.0, 876.0, 345.0, None, None, None, None]
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这意味着数据将被覆盖以前的数据。另外,如果我不向新对象中的数组分配任何内容,它会保存前一个对象的结果。:( …
我有一个 javascript 文件,在其中编写了一堆 jquery 函数。我有一个返回角度范围的函数。我发现如果我将同一个函数编写两次,代码仍然会执行。
function getngScope()
{
alert(2);
return angular.element($('#data-area')).scope();
}
function getngScope()
{
alert(1);
return angular.element($('#data-area')).scope();
}
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当我打电话时,getngScope()我收到“1”警报并返回范围。为什么它有这种行为?
我试图从 spark 中的镶木地板文件中读取,与另一个 rdd 进行联合,然后将结果写入我读取的同一个文件中(基本上是覆盖),这会引发以下错误:
couldnt write parquet to file: An error occurred while calling o102.parquet.
: org.apache.spark.sql.catalyst.errors.package$TreeNodeException: execute, tree:
TungstenExchange hashpartitioning(billID#42,200), None
+- Union
:- Scan ParquetRelation[units#35,price#36,priceSold#37,orderingTime#38,itemID#39,storeID#40,customerID#41,billID#42,sourceRef#43] InputPaths: hdfs://master-wat:8020/user/root/dataFile/parquet/general/NPM61LKK1C/Billbody
+- Project [units#22,price#23,priceSold#24,orderingTime#25,itemID#26,storeID#27,customerID#28,billID#29,2 AS sourceRef#30]
+- Scan ExistingRDD[units#22,price#23,priceSold#24,orderingTime#25,itemID#26,storeID#27,customerID#28,billID#29]
at org.apache.spark.sql.catalyst.errors.package$.attachTree(package.scala:49)
at org.apache.spark.sql.execution.Exchange.doExecute(Exchange.scala:247)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:132)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:130)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:130)
at org.apache.spark.sql.execution.Sort.doExecute(Sort.scala:64)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:132)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:130)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:130)
at org.apache.spark.sql.execution.Window.doExecute(Window.scala:245)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:132)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:130)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:130)
at org.apache.spark.sql.execution.Filter.doExecute(basicOperators.scala:70)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:132)
at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$5.apply(SparkPlan.scala:130)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:130) …Run Code Online (Sandbox Code Playgroud) overwrite ×10
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