安装LuaXml
下载luaxml
然后修改Makefile
# 2009-03-16 by gf
# generic compiler and linker settings:
CC = gcc
INCDIR = -I/usr/local/openresty/luajit/include/luajit-2.1
LIB =
LIBDIR = -L. -L/usr/local/openresty/luajit/lib
CFLAGS = -Os -Wall -c #-g
# generic platform specific rules:
ARCH = $(shell uname -s)
ifeq ($(ARCH),Linux)
CFLAGS += -fPIC
LFLAGS = -fPIC -shared
LIBS = $(LIBDIR) $(LIB) -lluajit-5.1 -ldl
EXESUFFIX =
SHLIBSUFFIX = .so
else
ifeq ($(ARCH),Darwin) # MacOSX
LFLAGS = -bundle
LIBS = $(LIBDIR) -L/usr/local/lib $(LIB) -lluajit-5.1
EXESUFFIX = .app
SHLIBSUFFIX = .so
else # windows, MinGW
LFLAGS = -shared
LIBS = $(LIBDIR) $(LIB) -llua51 -mconsole -s
EXESUFFIX = .exe
SHLIBSUFFIX = .dll
endif
endif
# project specific targets:
all: LuaXML_lib$(SHLIBSUFFIX)
# project specific link rules:
LuaXML_lib$(SHLIBSUFFIX): LuaXML_lib.o
$(CC) -o $@ $(LFLAGS) $^ $(LIBS)
# project specific dependencies:
LuaXML_lib.o: LuaXML_lib.c
# generic rules and targets:
.c.o:
$(CC) $(CFLAGS) $(INCDIR) -c $<
clean:
rm -f *.o *~ LuaXML_lib.so LuaXML_lib.dll
主要修改如下几个地方：
INCDIR = -I/usr/local/openresty/luajit/include/luajit-2.1
LIBDIR = -L. -L/usr/local/openresty/luajit/lib
LIBS = $(LIBDIR) $(LIB) -lluajit-5.1 -ldl
LIBS = $(LIBDIR) -L/usr/local/lib $(LIB) -lluajit-5.1
LIBS = $(LIBDIR) $(LIB) -llua51 -mconsole -s
拷贝到openresty/openresty:1.11.2.1-trusty镜像实例中，然后再此基础上编译
make clean && make
然后拷贝LuaXML_lib.so以及LuaXml.lua到/usr/local/openresty/lualib/
使用luaxml
require "LuaXml"
xml = require "xml"
local resp = xml.eval(xmlStr)
local oktag = resp:find("ok")
local ok = oktag[1]
ngx.log(ngx.INFO,"ok tag:"..ok)
- 关于xml
如果不require "xml"，而是直接用xml的话，则第二次请求会报错
attempt to index global 'xml' (a nil value)
- 关于eval
返回的是lua table，通过find出来，也是一个table，取出相应的值接口，如果是单值，取数组第一个，比如xmlStr是
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<result>
<ok>false</ok>
</result>
