openJDK环境搭建编译(fedora)
1.安装VMware VMware-workstation-full-10.0.7-2844087.exe
破解码:HY06L-F334P-9Z6H9-6R2XM-23C6J
安装完成之后,Downloading VMware Tools for Linux - version 9.2.0
2.下载源码openJDK源码
http://download.java.net/openjdk/jdk7/promoted/b147/openjdk-7-fcs-src-b147-27_jun_2011.zip
3.Fedora 用户名:mutong 密码:123456
Installing VMware Tools,please wait.....
mount:special device /dev/hda does not exist
4.共享文件夹在虚拟机上面的路径/mnt/hgfs/linux镜像
把openjdk-7-fcs-src-b147-27_jun_2011.zip拷贝到桌面
从home/文件夹 copy 到 usr/local/java
OpenJDK编译之路
1.到OpenJDK目录下面运行 make sanity 进行检测
检测结果如下:
- WARNING: LANG has been set to en_US.UTF-8, this can cause build failures.
- Try setting LANG to 'C'.
- ERROR: The version of ant being used is older than
- the required version of '1.7.1'.
- The version of ant found was ''.
- ERROR: You seem to not have installed ALSA 0.9.1 or higher.
- Please install ALSA (drivers and lib). You can download the
- source distribution from http://www.alsa-project.org or go to
- http://www.freshrpms.net/docs/alsa/ for precompiled RPM packages.
- ERROR: FreeType version 2.3.0 or higher is required.
- make[2]: Entering directory `/usr/local/java/openjdk/jdk/make/tools/freetypecheck'
- /bin/mkdir -p /usr/local/java/openjdk/build/linux-i586/btbins
- rm -f /usr/local/java/openjdk/build/linux-i586/btbins/freetype_versioncheck
- make[2]: Leaving directory `/usr/local/java/openjdk/jdk/make/tools/freetypecheck'
- Failed to build freetypecheck.
- ERROR: You do not have access to valid Cups header files.
- Please check your access to
- /usr/include/cups/cups.h
- and/or check your value of ALT_CUPS_HEADERS_PATH,
- CUPS is frequently pre-installed on many systems,
- or may be downloaded from http://www.cups.org
- Exiting because of the above error(s).
- make: *** [post-sanity] Error
开始解决错误:
卸载OpenJDK
1. 执行命令rpm -qa|grep jdk
java-1.6.0-openjdk-plugin-1.6.0.0-44.1.9.1.fc14.i686
java-1.6.0-openjdk-1.6.0.0-44.1.9.1.fc14.i686
2. 执行卸载命令
yum -y remove java java-1.6.0-openjdk-1.6.0.0-44.1.9.1.fc14.i686
- Loaded plugins: langpacks, presto, refresh-packagekit
- Adding en_US to language list
- Setting up Remove Process
- Removing java-1.6.0-openjdk.i686 1:1.6.0.0-44.1.9.1.fc14 - e from the transaction
- Resolving Dependencies
- --> Running transaction check
- ---> Package java-1.6.0-openjdk.i686 1:1.6.0.0-44.1.9.1.fc14 set to be erased
- --> Processing Dependency: java-1.6.0-openjdk = 1:1.6.0.0-44.1.9.1.fc14 for package: 1:java-1.6.0-openjdk-plugin-1.6.0.0-44.1.9.1.fc14.i686
- --> Running transaction check
- ---> Package java-1.6.0-openjdk-plugin.i686 1:1.6.0.0-44.1.9.1.fc14 set to be erased
- --> Finished Dependency Resolution
- Dependencies Resolved
- ================================================================================
- Package Arch Version
- Repository Size
- ================================================================================
- Removing:
- java-1.6.0-openjdk i686 1:1.6.0.0-44.1.9.1.fc14
- @anaconda-InstallationRepo-201010211814.i386 83 M
- Removing for dependencies:
- java-1.6.0-openjdk-plugin
- i686 1:1.6.0.0-44.1.9.1.fc14
- @anaconda-InstallationRepo-201010211814.i386 191 k
- Transaction Summary
- ================================================================================
- Remove 2 Package(s)
- Installed size: 83 M
- Downloading Packages:
- Running rpm_check_debug
- Running Transaction Test
- Transaction Test Succeeded
- Running Transaction
- Erasing : 1:java-1.6.0-openjdk-plugin-1.6.0.0-44.1.9.1.fc14.i686 1/2
- Erasing : 1:java-1.6.0-openjdk-1.6.0.0-44.1.9.1.fc14.i686 2/2
- Removed:
- java-1.6.0-openjdk.i686 1:1.6.0.0-44.1.9.1.fc14
- Dependency Removed:
- java-1.6.0-openjdk-plugin.i686 1:1.6.0.0-44.1.9.1.fc14
- Complete!
linux 安装jdk 1.7 32位
1.下载:
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html
wget http://uni-smr.ac.ru/archive/dev/java/bulk/jdk-7u21-linux-i586.rpm
2.安装:
rpm -ivh jdk-7u21-linux-i586.rpm
Preparing... ########################################### [100%]
1:jdk ########################################### [100%]
Unpacking JAR files...
rt.jar...
jsse.jar...
charsets.jar...
tools.jar...
localedata.jar...
jfxrt.jar...
plugin.jar...
javaws.jar...
deploy.jar...
查看安装路径 echo $JAVA_HOME
/usr/local/java/jdk1.7.0_40
3.修改profile:
sudo vi /etc/profile
//最后面加入
JAVA_HOME=/usr/local/java/jdk1.7.0_40
CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOEM/lib/dt.jar
PATH=$JAVA_HOME/bin:$PATH
export ALT_BOOTDIR=/usr/local/java/jdk1.7.0_80
export ALLOW_DOWNLOADS=true
export USE_PRECOMPILED_HEADER=true
export SKIP_DEBUG_BUILD=false
export SKIP_FASTDEBUG_BUILD=true
export DEBUG_NAME=debug
unset CLASSPATH
unset JAVA_HOME
4.保存:
#source /etc/profile
5.验证成功:
# java -version
在Linux上安装ant环境
1、从http://ant.apache.org 上下载tar.gz版ant
2、复制到/usr下
3、tar -vxzf apahce-ant-1.9.2-bin.tar.gz 解压
4、chown -R yjdabc apahce-ant-1.9.2 改变权限
chown -R :users apahce-ant-1.9.2
chmod -R +x apahce-ant-1.9.2
5、vi /etc/profile 修改系统配置文件
#set Ant enviroment
ANT_HOME=/usr/local/java/apache-ant-1.7.0
ANYPATH=$ANTPATH:$ANT_HOME/bin
unset ANT_HOME
6、source /etc/proifle 立刻将配置生效
7、ant -version 测试ant是否生效
安装alsa-lib 包含ALSA库函数 声卡
ftp://ftp.alsa-project.org/pub/lib/
alsa-lib-1.1.6.tar.bz2 tar -xvf alsa-lib-1.1.6.tar.bz2
进入目录:cd alsa-lib-1.1.6.tar.bz2
执行命令# ./configure
# make install
安装Freetype
https://download.savannah.gnu.org/releases/freetype/
freetype-2.5.3.tar.gz
执行命令 # ./configure
# make
#sudo make install
编译完成之后如果还报错 在目录include
cp -r freetype2/* ./
安装cups
https://github.com/apple/cups/releases
执行命令同上
到这里以上问题全部解决 执行make sanity
- ( cd ./jdk/make && \
- make sanity HOTSPOT_IMPORT_CHECK=false JDK_TOPDIR=/usr/local/java/openjdk/jdk JDK_MAKE_SHARED_DIR=/usr/local/java/openjdk/jdk/make/common/shared EXTERNALSANITYCONTROL=true SOURCE_LANGUAGE_VERSION=7 TARGET_CLASS_VERSION=7 MILESTONE=internal BUILD_NUMBER=b00 JDK_BUILD_NUMBER=b00 FULL_VERSION=1.7.0-internal-debug-root_2018_05_05_02_41-b00 PREVIOUS_JDK_VERSION=1.6.0 JDK_VERSION=1.7.0 JDK_MKTG_VERSION=7 JDK_MAJOR_VERSION=1 JDK_MINOR_VERSION=7 JDK_MICRO_VERSION=0 PREVIOUS_MAJOR_VERSION=1 PREVIOUS_MINOR_VERSION=6 PREVIOUS_MICRO_VERSION=0 ARCH_DATA_MODEL=32 VARIANT=DBG DEBUG_CLASSFILES=true COOKED_BUILD_NUMBER=0 ALT_OUTPUTDIR=/usr/local/java/openjdk/build/linux-i586 ALT_LANGTOOLS_DIST=/usr/local/java/openjdk/build/linux-i586/langtools/dist ALT_CORBA_DIST=/usr/local/java/openjdk/build/linux-i586/corba/dist ALT_JAXP_DIST=/usr/local/java/openjdk/build/linux-i586/jaxp/dist ALT_JAXWS_DIST=/usr/local/java/openjdk/build/linux-i586/jaxws/dist ALT_HOTSPOT_IMPORT_PATH=/usr/local/java/openjdk/build/linux-i586/hotspot/import BUILD_HOTSPOT=true ; )
- make[1]: Entering directory `/usr/local/java/openjdk/jdk/make'
- make[1]: Leaving directory `/usr/local/java/openjdk/jdk/make'
- Build Machine Information:
- build machine = localhost.localdomain
- Build Directory Structure:
- CWD = /usr/local/java/openjdk
- TOPDIR = .
- LANGTOOLS_TOPDIR = ./langtools
- JAXP_TOPDIR = ./jaxp
- JAXWS_TOPDIR = ./jaxws
- CORBA_TOPDIR = ./corba
- HOTSPOT_TOPDIR = ./hotspot
- JDK_TOPDIR = ./jdk
- Build Directives:
- BUILD_LANGTOOLS = true
- BUILD_JAXP = true
- BUILD_JAXWS = true
- BUILD_CORBA = true
- BUILD_HOTSPOT = true
- BUILD_JDK = true
- DEBUG_CLASSFILES =
- DEBUG_BINARIES =
- Hotspot Settings:
- HOTSPOT_BUILD_JOBS =
- HOTSPOT_OUTPUTDIR = /usr/local/java/openjdk/build/linux-i586/hotspot/outputdir
- HOTSPOT_EXPORT_PATH = /usr/local/java/openjdk/build/linux-i586/hotspot/import
- Bootstrap Settings:
- BOOTDIR = /usr/local/java/jdk1.7.0_80
- ALT_BOOTDIR = /usr/local/java/jdk1.7.0_80
- BOOT_VER = 1.7.0 [requires at least 1.6]
- OUTPUTDIR = /usr/local/java/openjdk/build/linux-i586
- ALT_OUTPUTDIR = /usr/local/java/openjdk/build/linux-i586
- ABS_OUTPUTDIR = /usr/local/java/openjdk/build/linux-i586
- Build Tool Settings:
- SLASH_JAVA = /NOT-SET
- ALT_SLASH_JAVA =
- VARIANT = DBG
- JDK_DEVTOOLS_DIR = /NOT-SET/devtools
- ALT_JDK_DEVTOOLS_DIR =
- ANT_HOME =
- UNIXCOMMAND_PATH = /bin/
- ALT_UNIXCOMMAND_PATH =
- COMPILER_PATH = /usr/bin/
- ALT_COMPILER_PATH =
- DEVTOOLS_PATH = /usr/bin/
- ALT_DEVTOOLS_PATH =
- UNIXCCS_PATH = /usr/ccs/bin/
- ALT_UNIXCCS_PATH =
- USRBIN_PATH = /usr/bin/
- ALT_USRBIN_PATH =
- COMPILER_NAME = GCC4
- COMPILER_VERSION = GCC4
- CC_VER = 4.5.1 [requires at least 4.3.0]
- ZIP_VER = 3.0 [requires at least 2.2]
- UNZIP_VER = 6.00 [requires at least 5.12]
- ANT_VER = 1.8.0 [requires at least 1.7.1]
- TEMPDIR = /usr/local/java/openjdk/build/linux-i586/tmp
- Build Directives:
- OPENJDK = true
- USE_HOTSPOT_INTERPRETER_MODE =
- PEDANTIC =
- DEV_ONLY =
- NO_DOCS =
- NO_IMAGES =
- TOOLS_ONLY =
- INSANE =
- COMPILE_APPROACH = parallel
- PARALLEL_COMPILE_JOBS = 2
- ALT_PARALLEL_COMPILE_JOBS =
- FASTDEBUG =
- COMPILER_WARNINGS_FATAL = false
- COMPILER_WARNING_LEVEL =
- SHOW_ALL_WARNINGS =
- INCREMENTAL_BUILD = false
- CC_HIGHEST_OPT =
- CC_HIGHER_OPT =
- CC_LOWER_OPT =
- CXXFLAGS = -g -fPIC -DCC_NOEX -W -Wall -Wno-unused -Wno-parentheses -fno-omit-frame-pointer -D_LITTLE_ENDIAN
- CFLAGS = -g -fno-strict-aliasing -fPIC -W -Wall -Wno-unused -Wno-parentheses -fno-omit-frame-pointer -D_LITTLE_ENDIAN
- BOOT_JAVA_CMD = /usr/local/java/jdk1.7.0_80/bin/java -XX:-PrintVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -client -Xmx512m -Xms512m -XX:PermSize=32m -XX:MaxPermSize=160m
- BOOT_JAVAC_CMD = /usr/local/java/jdk1.7.0_80/bin/javac -J-XX:ThreadStackSize=768 -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -encoding ascii -source 6 -target 6 -XDignore.symbol.file=true
- BOOT_JAR_CMD = /usr/local/java/jdk1.7.0_80/bin/jar
- BOOT_JARSIGNER_CMD = /usr/local/java/jdk1.7.0_80/bin/jarsigner
- JAVAC_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586/bin/javac -J-XX:ThreadStackSize=768 -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -g -source 7 -target 7 -encoding ascii -Xbootclasspath:/usr/local/java/openjdk/build/linux-i586/classes
- JAVAH_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586/bin/javah -bootclasspath /usr/local/java/openjdk/build/linux-i586/classes
- JAVADOC_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586/bin/javadoc -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -bootclasspath /usr/local/java/openjdk/build/linux-i586/classes
- Build Platform Settings:
- USER = root
- PLATFORM = linux
- ARCH = i586
- LIBARCH = i386
- ARCH_FAMILY = i586
- ARCH_DATA_MODEL = 32
- ARCHPROP = i386
- ALSA_VERSION = 1.1.6
- OS_VERSION = 2.6.35.6-45.fc14.i686 [requires at least 2.6]
- OS_VARIANT_NAME = Fedora
- OS_VARIANT_VERSION = 14
- MB_OF_MEMORY = 2012
- GNU Make Settings:
- MAKE = make
- MAKE_VER = 3.82 [requires at least 3.81]
- MAKECMDGOALS = sanity
- MAKEFLAGS = w
- SHELL = /bin/sh
- Target Build Versions:
- JDK_VERSION = 1.7.0
- MILESTONE = internal
- RELEASE = 1.7.0-internal-debug
- FULL_VERSION = 1.7.0-internal-debug-root_2018_05_05_02_41-b00
- BUILD_NUMBER = b00
- External File/Binary Locations:
- USRJDKINSTANCES_PATH = /opt/java
- BUILD_JDK_IMPORT_PATH = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries
- ALT_BUILD_JDK_IMPORT_PATH =
- JDK_IMPORT_PATH = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586
- ALT_JDK_IMPORT_PATH =
- LANGTOOLS_DIST =
- ALT_LANGTOOLS_DIST = /usr/local/java/openjdk/build/linux-i586/langtools/dist
- CORBA_DIST =
- ALT_CORBA_DIST = /usr/local/java/openjdk/build/linux-i586/corba/dist
- JAXP_DIST =
- ALT_JAXP_DIST = /usr/local/java/openjdk/build/linux-i586/jaxp/dist
- JAXWS_DIST =
- ALT_JAXWS_DIST = /usr/local/java/openjdk/build/linux-i586/jaxws/dist
- HOTSPOT_DOCS_IMPORT_PATH = /NO_DOCS_DIR
- ALT_HOTSPOT_DOCS_IMPORT_PATH =
- HOTSPOT_IMPORT_PATH = /usr/local/java/openjdk/build/linux-i586/hotspot/import
- ALT_HOTSPOT_IMPORT_PATH = /usr/local/java/openjdk/build/linux-i586/hotspot/import
- HOTSPOT_CLIENT_PATH = /usr/local/java/openjdk/build/linux-i586/hotspot/import/jre/lib/i386/client
- ALT_HOTSPOT_CLIENT_PATH =
- HOTSPOT_SERVER_PATH = /usr/local/java/openjdk/build/linux-i586/hotspot/import/jre/lib/i386/server
- ALT_HOTSPOT_SERVER_PATH =
- CACERTS_FILE = ./../src/share/lib/security/cacerts
- ALT_CACERTS_FILE =
- CUPS_HEADERS_PATH = /usr/include
- ALT_CUPS_HEADERS_PATH =
- OpenJDK-specific settings:
- FREETYPE_HEADERS_PATH = /usr/include
- ALT_FREETYPE_HEADERS_PATH =
- FREETYPE_LIB_PATH = /usr/lib
- ALT_FREETYPE_LIB_PATH =
- Previous JDK Settings:
- PREVIOUS_RELEASE_PATH = USING-PREVIOUS_RELEASE_IMAGE
- ALT_PREVIOUS_RELEASE_PATH =
- PREVIOUS_JDK_VERSION = 1.6.0
- ALT_PREVIOUS_JDK_VERSION =
- PREVIOUS_JDK_FILE =
- ALT_PREVIOUS_JDK_FILE =
- PREVIOUS_JRE_FILE =
- ALT_PREVIOUS_JRE_FILE =
- PREVIOUS_RELEASE_IMAGE = /usr/local/java/jdk1.7.0_80
- ALT_PREVIOUS_RELEASE_IMAGE =
- Sanity check passed.
执行命令 make
Total time: 9 seconds
make[3]: *** [all] Error 1
make[3]: Leaving directory `/usr/local/java/openjdk/jaxws/make'
make[2]: *** [jaxws-build] Error 2
make[2]: Leaving directory `/usr/local/java/openjdk'
make[1]: *** [generic_debug_build] Error 2
make[1]: Leaving directory `/usr/local/java/openjdk'
make: *** [build_debug_image] Error 2
http://www.filewatcher.com/m/libX11-devel-1.1.5-4.fc10.i386.rpm.1110944-0.html
查看输出文件:output
查看现有的yum
rpm -qa|grep yum
替换fedora.repo中的内容
执行如下命令: yum clean all
yum makecache
配置yum源
- [base]
- name=CentOS-6 - Base - 163.com
- baseurl=http://mirrors.163.com/centos/6/os/$basearch/
- gpgcheck=1
- gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
- [updates]
- name=CentOS-6 - Updates - 163.com
- baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
- gpgcheck=1
- gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
- [extras]
- name=CentOS-6 - Extras - 163.com
- baseurl=http://mirrors.163.com/centos/6/extras/$basearch/
- gpgcheck=1
- gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
- [centosplus]
- name=CentOS-6 - Plus - 163.com
- baseurl=http://mirrors.163.com/centos/6/os/$basearch/
- gpgcheck=1
- enabled=0
- gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
- [contrib]
- name=CentOS-6 - Contrib - 163.com
- baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/
- gpgcheck=1
- enabled=0
- gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
vim ./hotspot/make/linux/makefiles/gcc.make
注释掉:
WARNINGS_ARE_ERRORS = -Werror
mount /dev/cdrom1 /mnt/vcdrom
rpm -ivh --nodeps libX11-devel-1.3.4-3.fc14.i686.rpm
libstdc++-static-4.8.0-0.18.fc20.i686.rpm
/usr/local/openjdk7-debug/jaxws/build/xml_generated/build-drop-jaf_src.xml:96: Redirection detected from https to http. Protocol switch unsafe, not allowed.
export ALT_DROPS_DIR=/usr/local/java/openjdk/drop
openJDK环境搭建编译(fedora)的更多相关文章
- hadoop环境搭建编译
安装: JDK1.7+ maven 3.0 or later findbugs 1.3.9 protocolBuffer 2.5.0 cmake 2.6 zlib-devel openssl-deve ...
- Yocto开发笔记之《快速入门,环境搭建 & 编译》(QQ交流群:519230208)
开了一个交流群,欢迎爱好者和开发者一起交流,转载请注明出处. QQ群:,为避免广告骚扰,申请时请注明 “开发者” 字样 ======================================== ...
- Lua环境搭建编译[Lua5.2+VS2010]
这里是我编译的和一个测试Demo:http://download.csdn.net/detail/allh45601/6783653 大家如果看我下边说的不是很清楚,可以下载这个具体工程: 群:103 ...
- cocos2.2.3 HelloCpp TestCpp android 环境搭建 编译
cygwin make PATH->E:\cygwin\bin JAVA_HOME->C:\Program Files\Java\jdk1.8.0_05 Eclipse->Windo ...
- cesium编程入门(二)环境搭建
环境搭建 环境搭建 编译 node 安装 Node.js安装包及源码下载地址为:https://nodejs.org/en/download/. 安装完成后,打开命令行,输入:node -v,如果结果 ...
- 【转】Linux(ubuntu14.04)上编译Android4.4源码的环境搭建及编译全过程
原文网址:http://jileniao.net/linux-android-building.html sublime text让我伤心.本来很信任sublime text的自动保存功能,之前使用一 ...
- freescale-sdk linux移植一搭建编译环境脚本host-prepare.sh分析
接下来使用自己的课外歇息时间,对基于PowerPC架构freescale-sdk,进行linux移植和分析.主要參考官方文档freescale linux sdk START_HERE.html,首先 ...
- FFMPEG在嵌入式硬件上应用之 —— 基本环境搭建及编译
前段时间在翻看电脑里面资料时,发现了以前做的在嵌入式硬件上面运行以ffmepg为基础,以嵌入式硬件解码的多媒体播放工作,发现都快忘记完了.今日得闲整理温习了一下ffmpeg在嵌入式上的运用,这里给大家 ...
- Unix NetWork Programming(unix环境编程)——环境搭建(解决unp.h等源码编译问题)
此配置实例亲测成功,共勉,有问题大家留言. 环境:VMware 10 + unbuntu 14.04 为了unix进行网络编程,编程第一个unix程序时遇到的问题,不能包含unp.h文件,这个感觉和a ...
随机推荐
- Jquery封装(学习)01
1.在开发过程中,我们有时候会经常用到重复的jquey代码,最常见的是我们那里需要就再哪里复制粘贴,这样大大增加了冗余代码,维护起来也不方便.我们何不把共同的jquery代码封装起来,哪里需要就哪里调 ...
- element-ui switch组件源码分析整理笔记(二)
源码如下: <template> <div class="el-switch" :class="{ 'is-disabled': switchDisab ...
- Css 基础知识(一)
1.Css概念 CSS 指层叠样式表 (Cascading Style Sheets)(级联样式表),Css是用来美化html标签的,相当于页面化妆. ◆样式表书写位置 2. 选择器 2.1.写法 选 ...
- [基础架构]PeopleSoft Tuxedo 重要文件说明
我们都知道PeopleSoft是由几个不同的服务组成的,他们在PeopleSoft体系结构中扮演着自己的角色.这些服务具有不同的文件结构并包含重要的可执行文件和配置文件. 以下是Peoplesoft体 ...
- 跨域cors中如何传递cookie(前端为什么无法向后端传递cookie?)
没有跨域 后端server只要在回应头部‘set-cookie’,那么就会有cookie产生并保存在客户端client. 等到client再次向后端server发送请求时浏览器的机制就会自动携带coo ...
- Android应用程序进程启动过程(前篇)
在此前我讲过Android系统的启动流程,系统启动后,我们就比较关心应用程序是如何启动的,这一篇我们来一起学习Android7.0 应用程序进程启动过程,需要注意的是“应用程序进程启动过程”,而不是应 ...
- qt多线程信号槽传输方式
//简单介绍一下QT信号与槽的连接方式: //Qt::AutoConnection表示系统自动选择相应的连接方式,如果信号与槽在同一线程,就采用Qt::DirectConnection, //如 ...
- python 中* 和**的作用
先举个 ** 使用的例子: data = {"a": 1, "b": 2} def foo(**kwargs): print kwargs foo(a=1, b ...
- c# 为什么要使用Array、ArrayList、List?
c#也是一直在进化的,从数组进化到ArrayList,再进化到泛型就是个例子. static void Main(string[] args) { //数组的增删改查 //定义数组 ] { ,,,, ...
- Hsqldb中设置主键,并让主键自增
CREATE TABLE userinfo ( Id INTEGER GENERATED BY DEFAULT AS IDENTITY, Name varchar(100) NOT NULL, Dep ...