嘿，我是使用 eXist 和 Xquery 的新手。
这是我的问题。我尝试使用 xQuery 从 xml 文件（存储在 eXist 数据库中）检索一些数据。当我只在没有任何条件的情况下进行检索时，它会变得很好。当我使用某些条件时，它会给我这个错误：
XML 解析错误：文档元素后出现垃圾
这是xml文件：
<?xml version="1.0" ?>
<produk>
<prod_detail>
<prod_name>Spreadrum G189</prod_name>
<struc>PDA</struc>
<company_org>pti</company_org>
</prod_detail>
<hard_spec>
<chipset>SC6800H</chipset>
<comm>
<sim_mode>
<single></single>
<dual></dual>
</sim_mode>
<netw_freq>EGSM900/DCS1800</netw_freq>
<gprs></gprs>
<voice_encode></voice_encode>
</comm>
<disp>
<lcd_info>3.5 HVGA 320*480</lcd_info>
<back_light>0</back_light>
<touch_scr>1</touch_scr>
<vice_scr>0</vice_scr>
<tp_conn>welded</tp_conn>
<com_ipcall_disp>1</com_ipcall_disp>
</disp>
<cam>
<cam_pos>
<front_cam>1</front_cam>
<back_cam>1</back_cam>
</cam_pos>
<cam_pix>
<front_cam>0.3Mp</front_cam>
<back_cam>2Mp</back_cam>
</cam_pix>
<cam_chip>CMOS</cam_chip>
<flash>1</flash>
<cam_con>Welded</cam_con>
</cam>
<pcb_size> </pcb_size>
<sound>
<speaker>class D (1524)</speaker>
<player>yes</player>
</sound>
<store>
<memory_capacity>1G+256M</memory_capacity>
<mem_card>1</mem_card>
</store>
<data_trans>
<USB>1</USB>
<infrared>0</infrared>
<bluetooth>1</bluetooth>
<wifi></wifi>
</data_trans>
<mult>
<fm>1</fm>
<tv>0</tv>
<gps>0</gps>
</mult>
<butt>
<keypad>
<qwerty>0</qwerty>
<func_key>5</func_key>
<num_key>0</num_key>
<side_key>volume and camera key (FPC)</side_key>
<key_ext></key_ext>
<color_key>white</color_key>
</keypad>
<touch_key>0</touch_key>
<trackball>0</trackball>
<opt_mouse>0</opt_mouse>
<led>0</led>
</butt>
<ui>
<connect_sim>rangkap 3</connect_sim>
<ext_deck>TF socket card</ext_deck>
<rf_test_port>no</rf_test_port>
<intfc_io>micro 5 pin usb</intfc_io>
<headphone_jack>micro 5 pin usb</headphone_jack>
<charging_ui>micro 5 pin usb</charging_ui>
<ui_usb>micro 5 pin usb</ui_usb>
<speed_touch>0</speed_touch>
</ui>
<other>
<batt>900mAh</batt>
<antenna>PIFA</antenna>
<torch>0</torch>
</other>
</hard_spec>
<soft_spec>
<style>android iphone</style>
<comm>
<sim_vas>1</sim_vas>
<data_con>
<gprs>1</gprs>
<wap>1</wap>
</data_con>
<message>
<sms>
<swr>1</swr>
<sin>1</sin>
<sout>1</sout>
<sdrf>1</sdrf>
<ssent>1</ssent>
</sms>
<mms>
<mwr>1</mwr>
<min>1</min>
<mout>1</mout>
<mdrf>1</mdrf>
<msent>1</msent>
<group_mms>1</group_mms>
<mms_chat_room>1</mms_chat_room>
<comm_bm>1</comm_bm>
</mms>
<email>
<esent>0</esent>
<erecv>0</erecv>
<ein>0</ein>
<eout>0</eout>
<esent>0</esent>
<edrft>0</edrft>
<eact>0</eact>
</email>
</message>
<phone_book>
<capacity>500</capacity>
<search_con>1</search_con>
<add>1</add>
<save>1</save>
<dial>1</dial>
<grup_num>1</grup_num>
<captive_chk>1</captive_chk>
</phone_book>
<call>
<sim_hist>
<sim1>1</sim1>
<sim2>1</sim2>
</sim_hist>
<dial_up_ip>1</dial_up_ip>
<call_grup>0</call_grup>
<set_call_id>0</set_call_id>
<call_div>1</call_div>
<call_bar>1</call_bar>
<call_hold>1</call_hold>
<call_redial>1</call_redial>
<call_fee>1</call_fee>
<handsfree>1</handsfree>
<cdial>1</cdial>
<crecv>1</crecv>
<call_rec></call_rec>
</call>
</comm>
<multimedia>
<cam>
<sw_cam>1</sw_cam>
<sub_cam>1</sub_cam>
<main_cam>1</main_cam>
<capt>1</capt>
<zoom>1</zoom>
<contras>1</contras>
<save>1</save>
<flash>0</flash>
<set_to_wpp>1</set_to_wpp>
<view_pic>1</view_pic>
<wb_conf>1</wb_conf>
<cont_photo>1</cont_photo>
<exposure_comp>1</exposure_comp>
<effect_set>1</effect_set>
</cam>
<video>
<vid_form>
<mp4>1</mp4>
<trigp>1</trigp>
<avi>1</avi>
<rmvb>1</rmvb>
<king_mov>1</king_mov>
</vid_form>
<vid_rec>1</vid_rec>
<sw_cam>1</sw_cam>
<vid_fcam>0</vid_fcam>
<vid_rcam>1</vid_rcam>
<vid_zoom>1</vid_zoom>
<contras>1</contras>
<save>
<phone>1</phone>
<mmc>1</mmc>
</save>
<vid_play>1</vid_play>
<vid_disp>1</vid_disp>
<adj_vol>1</adj_vol>
<add_vid>
<from_card>1</from_card>
<from_phone>1</from_phone>
</add_vid>
<vid_app>1</vid_app>
</video>
<audio>
<aud_form>
<mp3>1</mp3>
<wav>1</wav>
<midi>1</midi>
</aud_form>
<play>1</play>
<playlist>1</playlist>
<play_sett>1</play_sett>
<back_sound>1</back_sound>
<btooth_aud_out>0</btooth_aud_out>
<adj_vol>1</adj_vol>
<add>
<from_card>1</from_card>
<from_phone>1</from_phone>
</add>
<radio>1</radio>
<radio_menu>
<rad_play>1</rad_play>
<adj_vol>1</adj_vol>
<select_feq>1</select_feq>
<save_freq>0</save_freq>
<search_freq>1</search_freq>
<record>0</record>
<save>
<card>0</card>
<phone>0</phone>
</save>
</radio_menu>
<sound_rec>1</sound_rec>
<sound_rec_menu>
<record>1</record>
<play>1</play>
<save>
<card>1</card>
<phone>1</phone>
</save>
</sound_rec_menu>
</audio>
<imaging>
<im_viewer>1</im_viewer>
<im_viewer_menu>
<rotate>1</rotate>
<zoom>1</zoom>
<slide>1</slide>
<set_wpp>1</set_wpp>
<send>1
<via_btooth>1</via_btooth>
<via_mms>1</via_mms>
</send>
<edit>1</edit>
<detail>1</detail>
</im_viewer_menu>
<photo_editor>1</photo_editor>
<photo_editor_menu>
<auto_resize>0</auto_resize>
</photo_editor_menu>
</imaging>
<another_mfunc>
<tv>1</tv>
<games>1</games>
<gps>0</gps>
<keypad_lock>1</keypad_lock>
</another_mfunc>
</multimedia>
<service>
<sim_serv>
<stk_sim_1>1</stk_sim_1>
<stk_sim_2>1</stk_sim_2>
<browsing>1</browsing>
</sim_serv>
<chat>1</chat>
<java>0</java>
<opera>0</opera>
<m_offc>0</m_offc>
<fb_sc>0</fb_sc>
<pimo_sc>0</pimo_sc>
<tpulsa_sc>0</tpulsa_sc>
</service>
<tools>
<btooth>
<on_off>1</on_off>
<send>1</send>
<recv>1</recv>
<a2dp>0</a2dp>
</btooth>
<cald>1</cald>
<calc>1</calc>
<task>0</task>
<alarm>1</alarm>
<w_clock>1</w_clock>
<u_convrt>1</u_convrt>
<curr_conv>1</curr_conv>
<health_man>1</health_man>
<ebook_read>1</ebook_read>
<swatch>0</swatch>
<notes>1</notes>
<code_table>1</code_table>
<updownload_pbook>0</updownload_pbook>
<usr_prof>1</usr_prof>
<handwritting>1</handwritting>
</tools>
<sett>
<file_man>
<int_mem>1</int_mem>
<ext_mem>1</ext_mem>
<rwmrmov>1</rwmrmov>
<format>1</format>
</file_man>
<disp>
<wpp>1</wpp>
<ssaver>1</ssaver>
<pon_disp>1</pon_disp>
<poff_disp>1</poff_disp>
<show_own_num>0</show_own_num>
</disp>
<p_sett>
<sch_pow_on>1</sch_pow_on>
<in_lang>
<eng>1</eng>
<stroke>1</stroke>
<piyin>1</piyin>
<french>0</french>
<german>0</german>
<spain>0</spain>
<russian>0</russian>
<indonesian>1</indonesian>
<portugis>0</portugis>
<turkish>0</turkish>
<persian>0</persian>
<italia>0</italia>
</in_lang>
<lang>
<eng>1</eng>
<ind>0</ind>
<china>1</china>
<french>0</french>
<german>0</german>
<spain>0</spain>
<russian>0</russian>
<indonesian>0</indonesian>
<portugis>0</portugis>
<turkish>0</turkish>
<persian>0</persian>
<italia>0</italia>
</lang>
<time_date>1</time_date>
<pref_in>0</pref_in>
<greet_text>0</greet_text>
<dedic_key>0</dedic_key>
<auto_update_time>1</auto_update_time>
<uart_sett>0</uart_sett>
</p_sett>
<s_oth>
<sound_sett>1</sound_sett>
<sound_sett_opt>
<aud_eff>1</aud_eff>
<bass_ench>0</bass_ench>
</sound_sett_opt>
<dual_sim_sw>0</dual_sim_sw>
<dual_sim_sett>0</dual_sim_sett>
<pen_call>0</pen_call>
<netw_sett>0</netw_sett>
<sec_sett>0</sec_sett>
<rest_sett>0</rest_sett>
</s_oth>
<misc_sett>
<sens_app>
<wall_shuff>0</wall_shuff>
<mp3_shuff>0</mp3_shuff>
<phone_shake>0</phone_shake>
<shake_to_read_sms>0</shake_to_read_sms>
<fm_chs_shake>0</fm_chs_shake>
<revrse_phone_mute>0</revrse_phone_mute>
<double_knock_mute>0</double_knock_mute>
</sens_app>
<voiceaid_sett>
<engin_sett>0</engin_sett>
<r_in_call>0</r_in_call>
<r_in_mess>0</r_in_mess>
<r_time_on_idle>0</r_time_on_idle>
<r_time_per_hour>0</r_time_per_hour>
<r_menu>0</r_menu>
<r_mesg>0</r_mesg>
<r_charge>0</r_charge>
<r_dial>0</r_dial>
<vol>0</vol>
<rate>0</rate>
<pith>0</pith>
</voiceaid_sett>
<wapp>
<wapp_form>
<gif>1</gif>
<bmp>1</bmp>
<jpg>1</jpg>
</wapp_form>
<wall_cust>1</wall_cust>
<dynamic_screensaver>0</dynamic_screensaver>
</wapp>
</misc_sett>
</sett>
<misc_func>
<ani>
<p_on_logo>1</p_on_logo>
<p_off_logo>1</p_off_logo>
</ani>
<ring>
<default>1</default>
<ring_form>
<mp3>1</mp3>
<midi>1</midi>
<wav>1</wav>
</ring_form>
<back_ring_for_call>1</back_ring_for_call>
<ring_edit>1</ring_edit>
</ring>
<vib_feedback>
<touch_scr>1</touch_scr>
<dial_num>1</dial_num>
</vib_feedback>
</misc_func>
</soft_spec>
</produk>
这是我的xql代码：
declare namespace xdb = "http://exist-db.org/xquery/xmldb";
for $x in doc("/db/skripsi/database/PTI/spreadrum_g189.xml")//*
where data($x)="1"
return $x
xql 代码实际上在沙箱中运行良好，但我不知道为什么在我实际实现它时它会给我错误:(。