I have just upgraded a net451 classic dotnet project to multi-target project using net461/netstandard2.0 with reasonable success.
Did however come across this compiler error for net461 when it comes to gaining access legacy configuration files via:
AppDomain.CurrentDomain.SetupInformation.ConfigurationFile
This appears to not be a thing in netstandard2.0 :) Anyone know of any work arounds or good solutions?
Add the ConfigurationManager as a NuGet
<ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
<PackageReference Include="System.Configuration.ConfigurationManager" Version="4.5.0" />
</ItemGroup>
Use ConfigurationManager in C#
var configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
Log4NetLogger.Configure(configFile.FilePath);
According to this article, which I found when looking for replacement for PlatformServices.Default.Application.ApplicationBasePath, it should be either of:
AppDomain.CurrentDomain.SetupInformation.ApplicationName
Assembly.GetEntryAssembly().GetName().Name
Just like you, I've just found out that the first one does not exist in recent 2.0 so I'll be using the GetEntryAssembly name..
..however keep in mind that GetEntryAssembly may be null when used i.e. from within a test runner like xUnit, or probably will be wrong if your appcode is ran from another not-yours hosting/startup module, etc - so that is not a perfect replacement.
Related
I'm building a suite of REST micro-services using .Net Core 3.0 Preview 6. All these services will have the same start up logic. So, I'm trying to place all the code in a .Net Standard library.
The goal is to have the IHostBuilder:CreateHostBuilder method, as well as the Startup:Configure and Startup:ConfigureServices class and methods in the library. The library will also contain error handling logic, customized http response messages, etc.
However, I can't seem to find the correct package that contains the ConfigureWebHostDefaults method. I tried adding the Microsoft.AspNetCore package 2.2.0, but that didn't resolve the issue.
I added the Microsoft.Extensions.Hosting (3.0.0-preview-6) package, that also doesn't resolve the issue.
Is what I'm attempting even possible?
Thanks
-marc
I resolved it, not the best way, but it works. I decided to make the library targeted specifically for .NET Core 3.0. So, I changed the targetframework in the project file. That change automatically resolved my other issue.
Import the Microsoft.AspNetCore package, and use WebHost.CreateDefaultBuilder() instead. According to the code it is built from, both CreateDefaultBuilder() and ConfigureWebHostDefaults() call the same internal method: ConfigureWebDefaults().
The only downside of this is that the returned host will be an IWebHost instead of an IHost.
I am trying to convert the contents of a UWP RichEditBox to HTML.
For that purpose, I've tried using the RtfPipe library (https://github.com/erdomke/RtfPipe). From the looks of it, this library has a problem on UWP, due to the fact that not all encodings are defined on that target framework. (This is the error you get, if you are interested: Encoding.GetEncoding can't work in UWP app, but the accepted answer seems not to be the best option on all platforms - I haven't even managed to make the suggested fix compile, so it might not be valid anymore)
Now, as a way of avoiding this from happening, I am wondering whether there is a way to force the control to always use one of the UWP-defined UTF-variants for encoding the data when the user types his text.
Because, now, when I type into it, I get things like that:
{\rtf1\fbidis\ansi\ansicpg1253\deff0\nouicompat\deflang1032{
....
\pard\tx720\cf1\f0\fs23\lang1033
...that make the library throw exceptions.
I guess, if I manage to make it not use ASCII code pages, things will be great.
After taking a look at the control properties though, I do not see something I could use. Is there any way to achieve this?
This is the error you get, if you are interested: Encoding.GetEncoding can't work in UWP app
As you described, there is an inner error thrown when using this package with UWP app. System.ArgumentException: 'Windows-1252' is not a supported encoding name, by testing on my side, which is thrown by the code line public static readonly Encoding AnsiEncoding = Encoding.GetEncoding("Windows-1252"); of RtfSpec.cs when UpdateEncoding.
It seems like Windows-1252 may not be supported in UWP from the error details,also see this similar thread. You could use UTF instead as you want, for example, have a change on the library with following then it will work (testing demo here).
public static readonly Encoding AnsiEncoding = Encoding.UTF8;
I haven't even managed to make the suggested fix compile, so it might not be valid anymore
Encoding.RegisterProvider method should be work, but it only support UWP or .NET Framework 4.6, it does't support the Portable Class Library. The RtfPipe library you mentioned is Portable Class Library, so that you cannot use Encoding.RegisterProvider. Encoding.GetEncoding method supports Portable Class Library, details please check the version information of the two classed.
I guess, if I manage to make it not use ASCII code pages
RTF itself uses the ANSI, PC-8, Macintosh, or IBM PC character set to control the representation and formatting of a document, you may not able to change that. Consider to update the library to resolve the issue for UWP.
I am using a JSON parser to extract the value and I am using the following jar
json-path-2.1.0, and I am getting the following error when I invoke the use case deployed as webservice on weblogic server
I wrote a small main program to extract the value from the json string and it works fine, but the server version of the use case is giving the issue. I am not sure if there are any other jars part of my ear can negatively impact this
SEVERE: defaultReader
java.lang.NoSuchFieldError: defaultReader
at com.jayway.jsonpath.spi.json.JsonSmartJsonProvider.<init>(JsonSmartJsonProvider.java:39)
at com.jayway.jsonpath.internal.DefaultsImpl.jsonProvider(DefaultsImpl.java:21)
at com.jayway.jsonpath.Configuration.defaultConfiguration(Configuration.java:174)
at com.jayway.jsonpath.internal.JsonContext.<init>(JsonContext.java:52)
at com.jayway.jsonpath.JsonPath.parse(JsonPath.java:596)
Stumbled about the same problem.
The reason why it does not work is not the JDK 8.
The reason why you encounter this issue, is the fact that weblogic 12.2.1.X is bundling some old version of json-smart.
On my machine this would be found here:
jar:file:/C:/dev/WLS_12_2_1_2_0/oracle_common/modules/net.minidev.json-smart.jar!/net/minidev/json/JSONValue.class
Now if you are using a library like json-path that depends on json-smart, then by default the container will load the required class using one of its built-in modules.
The blowup you have, seems to be that the JSONValue class that your json-path depends on seemed to have this defaultReder field.
Here is a snipet of the clode that is blowing up.
public JsonSmartJsonProvider() {
this(JSONParser.MODE_PERMISSIVE, JSONValue.defaultReader.DEFAULT_ORDERED);
}
That
JSONValue.defaultReader
Seems not to be valid on weblogs older system class loader class.
You can tell the container to use what you are packing by putting into your weblogic.xml deployment descriptor something like this:
<wls:prefer-application-packages>
<wls:package-name>net.minidev.json.*</wls:package-name>
</wls:prefer-application-packages>
I am having quite a bit of trouble getting weblogic to swallow the fine-grained instruction above.
I found myself to force weblogic to swallog all that goes into the web-inf folder instead doing:
<wls:container-descriptor>
<wls:prefer-web-inf-classes>true</wls:prefer-web-inf-classes>
</wls:container-descriptor>
I would have rather not be using a hammer like the web-inf-classes, but I am dancing with the weblogic system classloader when I do not go coarse grained...
Regards.
I too was facing this issue, It turned out some other library was using json-smart's older version, and it was getting precedence over json-path's json-smart dependency. Removing the other jar solved the issue. Or you can also downgrade your json-path's version to appropriate version such that it support json-smart's older version.
Looks like JsonParser jar is present in JVM 1.8 version and it seems to have more precedence over the JsonParser class available in Json-path.jar. Apparently the us case doesn't work in 12.2.1 version of the weblogic server but it works fine in 12.1.3
I had the same problem but I use Gradle so I had to add:
compile group: 'net.minidev', name: 'json-smart', version: '2.3' to my dependencies.
I can't seem to find a solution to access a MySQL server from an Objective-C Mac OS project (which uses ARC).
I tried to use the MySQL framework that Sequel Pro provides, but that crashes (EXC_i386_GPFLT) my App whenever I just create a connection object:
SPMySQLConnection *conn = [[SPMySQLConnection alloc] init];
I don't know whether that is a bug in the framework or if I need to do something else in order to use it.
I tried a few other libraries (like MySqueakQl) but none of them are ARC compatible.
Also I tried to link to libmysqlclient.a directly, but if I copy that library into my project, I get a code signing error; if I just link to the .a in /usr/local/mysql/lib/, I get another error: dyld: Library not loaded: libmysqlclient.18.dylib ... Reason: image not found. I have to admit that I have zero experince with using third-party libraries (whether .a or .dylib) and probably didn't do it right.
I'm a bit surprised that there doesn't seem to be an up-to-date (read: working) solution out there. I know, consumer apps rather use Core Data, but I have to access out company database server.
Has anybody seen a solution (libary?) that works more or less "out of the box"? I'd be willing to pay for something that actually works.
A good tutorial on how to use .a libraries in Xcode projects that would also help me to understand where the dylib error comes from would also be very helpful.
Problem solved. I probably made some mistake when including the library.
The right steps to do this:
Drag the libmysqlclient.a library into your project window
Make sure you set Copy items if needed to Yes, and that it is added to your main target
Drag a folder containing the headers (found under /usr/local/mysql/include) into your project window
Again, make sure you set Copy items if needed to Yes and the correct target is checked.
Then:
#import "mysql.h"
- (BOOL) mySQLTest {
MYSQL connection;
mysql_init(&connection);
if(!mysql_real_connect(&connection,
[self.host UTF8String],
[self.user UTF8String],
[self.password UTF8String],
[self.database UTF8String],
self.port,
NULL,
0)) {
return NO;
}
// ... work with the DB
mysql_close(&connection);
return YES;
}
Works like a charm.
I have no idea why on my former attempts I got an error about the dylib; I never used it (only the static library).
The code signing issue may have been just a bug or one-time quirk in Xcode.
i happen to receive a Html with an applet tag, is there a way to access the class received through chrome developer tools, i cant see it in the scripts. If there isnt how can i access it?
<applet name="tradesapp" id="tradesapp" code="loader3.SunLoaderApplet.class" archive="loader_20110113.jar" codebase="http://ih.advfn.com/" width="1100" height="2000" mayscript="" alt="This browser either has java disabled or does not support it" title="Java"><param name="manifestcrc" value="1211857157"><param name="storagepath" value="ih.advfn.com"><param name="masterloader" value="master"><param name="initial_focus" value="false"><param name="cache_archive" value="loader_20110113.jar"><param name="cache_version" value="1.0.7.7"><param name="java_arguments" value="-Dsun.java2d.d3d=false"><param name="advfn_url" value="http://ih.advfn.com/"><param name="streamer" value="stream-9.advfn.com"><param name="user" value="ih_340884"><param name="root" value="advfnclient.framework.BaseControl"><param name="page" value="advfnclient.TradesContainer"><param name="tz" value="US/Eastern"><param name="clearAllDateStamp" value="1272534624504"><param name="clearCacheDateStamp" value="1272534624504"><param name="language" value="us"><param name="view" value="ih"><param name="config_name" value="trades"><param name="config_default" value="Default"><param name="params" value="w=1100&h=2000&symbol=N%5EMSFT&montage=true&sources=afx:ukreg:rssnon&dims=664 79 15 0&col_widths=45 55 344 90 115&sid=1f58fa6b4ea88725c5b8e23d614a6e80&page_key=1338581393&w=1100&h=2000&pid=applet_embed&mypid=trades"><center><iframe width="600" height="300" src="/p.php?pid=javadisabled"></iframe></center></applet>
Chrome doesn't include a Java debugger and an applet isn't a script.
You can access it via document.getElementById('tradesapp'); in the JS console. If you want to do anything with it, then the applet will have to explicitly expose methods to JavaScript.
I suspect this is not your Java project, so I can't imagine Quentin's advice will help you. It sounds to me like you want to run the Java Applet yourself, perhaps making changes and having access to a debugger. I decided to see what I could do as I've never had experience with this kind of stuff before.
First of all, you can download the .jar file in the archive property. In your case it looks to be located at http://ih.advfn.com/loader_20110113.jar
You can then use Java Decomipler to decompile the .jar file. If you do so, you'll see that this jar file acts as a loader, and pulls more java classes from advfn.com. It saves them in the location given by:
String path = System.getProperty("user.home");
On windows this is C:\<USER>\advfn
You can decompile these classes as well if you're interested. You'll be left with an approximation of the original source code. In this case, a fairly good one.
If want you go one step further and decide to build the project yourself, you can import the classes into Eclipse. You'll notice there are some strange errors such as the following:
LoadFile(String paramLong, long arg3)
{
this.name = paramLong;
Object localObject;
this.size = localObject;
}
I've never built a decompiler myself and am not at all familiar with Java bytecode, but if I had to guess, I'd imagine that the decompiler was trying to represent a local instance of the argument that was passed in to it.
The fix is fairly obvious once you know this.size is of type Long.
LoadFile(String paramLong, long arg3)
{
this.name = paramLong;
this.size = arg3;
}
If you continue to make these changes, your code will compile successfully. But it still won't run as you're missing parameters set in the HTML. A sample line in LoaderApplet.java is as follows:
this.manifestCRC = Long.parseLong(getParameter("manifestcrc"));
If you return to the HTML page you found this at, you'll find a variety of parameters are specified there. You should be able to go through your project and replace requests for parameters with their appropriate values.
This was my first experience decompiling Java, so I might have missed a few details. Let me know if you need more help.