CentOS6.7 i686上安装JDK7

1内核版本：
2[root@heima01 java]# uname -a
3Linux heima01 2.6.32-573.el6.i686 #1 SMP Thu Jul 23 12:37:35 UTC 2015 i686 i686 i386 GNU/Linux
4
5发行版本：
6[root@heima01 java]# lsb_release -a
7LSB Version:	:base-4.0-ia32:base-4.0-noarch:core-4.0-ia32:core-4.0-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-ia32:printing-4.0-noarch
8Distributor ID:	CentOS
9Description:	CentOS release 6.7 (Final)
10Release:	6.7
11Codename:	Final
12安装目录：　　/usr/local/java　　示例：jdk压缩包解压后，/usr/local/java/jdk1.7.0_71原始jdk文件保存目录：　　当前用户主目录/develop
131.查看是否已经安装了jdk
14	1.1 $ java -version
15已经安装
16[heima01@heima01 ~]$ java -version
17java version "1.7.0_79"
18OpenJDK Runtime Environment (rhel-2.5.5.4.el6-i386 u79-b14)
19OpenJDK Client VM (build 24.79-b02, mixed mode, sharing)
20
21没有安装
22[root@heima01 heima01]# java -version
23bash: /usr/bin/java: No such file or directory
24
25	1.2 $ rpm -qa | grep java
26[heima01@heima01 ~]$ rpm -qa | grep java
27tzdata-java-2015e-1.el6.noarch
28java-1.6.0-openjdk-1.6.0.35-1.13.7.1.el6_6.i686
29java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
30
31	1.3 $ yum list installed | grep java
32[heima01@heima01 ~]$ yum list installed | grep java
33java-1.6.0-openjdk.i686  1:1.6.0.35-1.13.7.1.el6_6
34java-1.7.0-openjdk.i686  1:1.7.0.79-2.5.5.4.el6
35tzdata-java.noarch       2015e-1.el6      @anaconda-CentOS-201508042139.i386/6.7
36
372.查看安装的软件安装在哪里
38	2.1 $ rpm -ql java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
39	步骤:先通过rpm -qa搜索出的软件，再通过rpm -ql查看文件目录。
40[heima01@heima01 ~]$ rpm -ql java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
41/etc/.java
42/etc/.java/.systemPrefs
43/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.79
44/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.79/jaas-1.7.0.79.jar
45/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.79/jaas-1.7.0.jar
46/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.79/jaas.jar
47/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.79/jce-1.7.0.79.jar
48
493.卸载已经安装的jdk
50	3.1 $ rpm -e tzdata-java-2015e-1.el6.noarch
51	解释：-e 参数用于卸载软件包，但是如果有依赖于该安装包的已经安装项，则会卸载失败。
52[heima01@heima01 ~]$ rpm -e tzdata-java-2015e-1.el6.noarch
53error: Failed dependencies:
54	tzdata-java is needed by (installed) java-1.7.0-openjdk-1:1.7.0.79-2.5.5.4.el6.i686
55	tzdata-java is needed by (installed) java-1.6.0-openjdk-1:1.6.0.35-1.13.7.1.el6_6.i686
56	
57	3.2 # rpm -e --nodeps tzdata-java-2015e-1.el6.noarch
58[root@heima01 heima01]# rpm -e tzdata-java-2015e-1.el6.noarch
59error: Failed dependencies:
60	tzdata-java is needed by (installed) java-1.7.0-openjdk-1:1.7.0.79-2.5.5.4.el6.i686
61	tzdata-java is needed by (installed) java-1.6.0-openjdk-1:1.6.0.35-1.13.7.1.el6_6.i686
62[root@heima01 heima01]# rpm -e --nodeps tzdata-java-2015e-1.el6.noarch
63[root@heima01 heima01]# rpm -qa | grep java
64java-1.6.0-openjdk-1.6.0.35-1.13.7.1.el6_6.i686
65java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
66
67//--nodeps参数删除tzdata-java-2015e-1.el6.noarch，基于这个依赖的java-1.7.0-openjdk-1:1.7.0.79-2.5.5.4.el6.i686仍能够运行
68[root@heima01 heima01]# java -version
69java version "1.7.0_79"
70OpenJDK Runtime Environment (rhel-2.5.5.4.el6-i386 u79-b14)
71OpenJDK Client VM (build 24.79-b02, mixed mode, sharing)
72
73权限问题：
74[heima01@heima01 ~]$ rpm -e --nodeps tzdata-java-2015e-1.el6.noarch
75error: can't create transaction lock on /var/lib/rpm/.rpm.lock (Permission denied)
76
77解决方案：
78	$ su //登录root用户，再进行删除操作
79[heima01@heima01 ~]$ su
80Password: 
81[root@heima01 heima01]# ls
82
83	3.3 删除java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
84[root@heima01 heima01]# rpm -e java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
85error: Failed dependencies:
86	jre >= 1.5.0 is needed by (installed) libreoffice-ure-1:4.2.8.2-11.el6.i686
87	libjawt.so is needed by (installed) libreoffice-core-1:4.2.8.2-11.el6.i686
88	libjawt.so(SUNWprivate_1.1) is needed by (installed) libreoffice-core-1:4.2.8.2-11.el6.i686
89
90[root@heima01 heima01]# rpm -e --nodeps java-1.7.0-openjdk-1.7.0.79-2.5.5.4.el6.i686
91
924.安装jdk
93	4.1 存储上传的jdk: /root/develop
94	
95[root@heima01 develop]# ls
96apache-tomcat-7.0.94.tar.gz  jdk-7u75-linux-x64.tar.gz  mysql-8.0.13-1.el7.x86_64.rpm-bundle.tar  server-jre-8u212-linux-x64.tar.gz
97
98[root@heima01 develop]# pwd
99/root/develop
100	
101	4.2 将jdk解压到/usr/local/java目录下
102创建/usr/local/java目录 
103	示例：# mkdir /usr/local/java
104
105[root@frxx ~]# ls /usr/local
106bin  etc  games  include  lib  lib64  libexec  sbin  share  src
107
108[root@frxx ~]# mkdir /usr/local/java
109
110[root@frxx ~]# ls /usr/local
111bin  etc  games  include  java  lib  lib64  libexec  sbin  share  src
112
113将压缩包解压到/usr/local/java目录下
114	示例：tar -xvf /root/develop/jdk-7u75-linux-x64.tar.gz -C /usr/local/java
115
116[root@heima01 /]# pwd
117/
118
119[root@heima01 /]# tar -xvf /root/develop/jdk-7u75-linux-x64.tar.gz -C /usr/local/java
120
121[root@heima01 /]# ls /usr/local/java/
122jdk1.7.0_75
123
124	4.3 设置环境变量
125		修改配置文件/etc/profile
126		
127编辑/etc/profile文件，添加环境变量：
128export JAVA_HOME=/usr/local/java/jdk1.7.0_75
129export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
130export PATH=$JAVA_HOME/bin:$PATH
131
132让配置生效：
133[root@heima01 /]# source /etc/profile
134
135问题：
136	描述:cannot execute binary file
137	原因：安装jdk的版本或位数和linux系统版本或位数不匹配
138[root@heima01 /]# java
139bash: /usr/local/java/jdk1.7.0_75/bin/java: cannot execute binary file
140
141Linux版本：2.6.32-573.el6.i686
142[root@heima01 /]# uname -a
143Linux heima01 2.6.32-573.el6.i686 #1 SMP Thu Jul 23 12:37:35 UTC 2015 i686 i686 i386 GNU/Linux
144JDK版本：jdk-7u75-linux-x64.tar.gz
145[root@heima01 /]# ls /root/develop/
146apache-tomcat-7.0.94.tar.gz  jdk-7u75-linux-x64.tar.gz
147
148	方案：使用i686 Linux对应的jdk，jdk-7u71-linux-i586.tar.gz
149[root@heima01 java]# ls /root/develop/
150apache-tomcat-7.0.94.tar.gz  jdk-7u71-linux-i586.tar.gz  jdk-7u75-linux-x64.tar.gz  mysql-8.0.13-1.el7.x86_64.rpm-bundle.tar  server-jre-8u212-linux-x64.tar.gz
151
152	验证安装成功：
153		示例：# java -version
154[root@heima01 java]# java -version
155java version "1.7.0_71"
156Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
157Java HotSpot(TM) Client VM (build 24.71-b01, mixed mode)